diff --git a/core/src/netwerkprog/game/client/Client.java b/core/src/netwerkprog/game/client/Client.java
deleted file mode 100644
index 93d6d2a..0000000
--- a/core/src/netwerkprog/game/client/Client.java
+++ /dev/null
@@ -1,104 +0,0 @@
-package netwerkprog.game.client;
-
-import netwerkprog.game.util.application.Controller;
-import netwerkprog.game.util.data.Data;
-import netwerkprog.game.util.data.ParserCallback;
-
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.io.IOException;
-import java.net.Socket;
-import java.util.Arrays;
-
-public class Client extends Controller implements ParserCallback {
-    private final int port;
-    private final String hostname;
-    private final Parser parser;
-    private boolean isConnected = true;
-    private Socket socket;
-    private Thread receiveThread;
-    private DataOutputStream outputStream;
-
-    public Client(String hostname) {
-        this.port = Data.port();
-        this.hostname = hostname;
-        this.parser = new Parser(this);
-    }
-
-    /**
-     * Starts the client process.
-     */
-    @Override
-    public void run() {
-        this.connect();
-        this.receiveThread.start();
-    }
-
-    /**
-     * Connects the client to the server.
-     */
-    public void connect() {
-        System.out.println("[CLIENT] connecting to server on port " + this.port);
-        try {
-            this.socket = new Socket(this.hostname, this.port);
-            DataInputStream in = new DataInputStream(socket.getInputStream());
-            this.outputStream = new DataOutputStream(socket.getOutputStream());
-
-            this.receiveThread = new Thread( () -> receive(in));
-
-        } catch (IOException e) {
-            System.out.println("[CLIENT] there was an error connecting : " + e.getMessage());
-            StringBuilder sb = new StringBuilder("         Stacktrace : ");
-            Arrays.stream(e.getStackTrace()).forEach(n -> sb.append("\t\t").append(n).append("\n"));
-            System.out.println(sb.toString());
-        }
-    }
-
-    /**
-     * Sends a message to the server.
-     * @param message The message to send.
-     */
-    public void send(String message) {
-        try {
-            this.outputStream.writeUTF(message);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    /**
-     * Receives a message from the server.
-     * @param in The inputStream
-     */
-    public void receive(DataInputStream in) {
-        while (isConnected) {
-            try {
-                this.parser.parse(in.readUTF());
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-        }
-    }
-
-    public void disconnect() {
-        this.isConnected = false;
-        try {
-            this.receiveThread.join();
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-
-        send("Disconnect");
-
-        try {
-            this.socket.close();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    @Override
-    public void onDataReceived(String data) {
-        System.out.println(data);
-    }
-}
diff --git a/core/src/netwerkprog/game/client/MainGame.java b/core/src/netwerkprog/game/client/MainGame.java
index b22b32f..c812dd3 100644
--- a/core/src/netwerkprog/game/client/MainGame.java
+++ b/core/src/netwerkprog/game/client/MainGame.java
@@ -17,10 +17,13 @@ import netwerkprog.game.client.game.characters.Agent;
 import netwerkprog.game.client.game.characters.Hacker;
 import netwerkprog.game.client.game.characters.Team;
 import netwerkprog.game.client.game.characters.abilities.BodySwap;
+import netwerkprog.game.client.game.connections.Client;
 import netwerkprog.game.client.game.map.GameInputProcessor;
 import netwerkprog.game.client.game.map.GameTile;
 import netwerkprog.game.client.game.map.Map;
 import netwerkprog.game.client.game.map.MapRenderer;
+import netwerkprog.game.util.data.Data;
+import netwerkprog.game.util.data.DataCallback;
 import netwerkprog.game.util.game.Faction;
 import netwerkprog.game.util.game.GameCharacter;
 import netwerkprog.game.util.graphics.FrameRate;
@@ -28,7 +31,7 @@ import netwerkprog.game.util.graphics.TextRenderer;
 
 import java.awt.*;
 
-public class MainGame extends ApplicationAdapter {
+public class MainGame extends ApplicationAdapter implements DataCallback {
     SpriteBatch batch;
     float screenWidth;
     float screenHeight;
@@ -104,7 +107,7 @@ public class MainGame extends ApplicationAdapter {
 //        playSong();
 
 
-//        connectToServer();
+        connectToServer();
     }
 
     public void initCharacters() {
@@ -146,7 +149,7 @@ public class MainGame extends ApplicationAdapter {
 
 
     private void connectToServer() {
-        client = new Thread(new Client("localhost"));
+        client = new Thread(new Client("localhost", this));
         try {
             client.start();
         } catch (Exception e) {
@@ -273,4 +276,8 @@ public class MainGame extends ApplicationAdapter {
         return team;
     }
 
+    @Override
+    public void onDataReceived(Data data) {
+        
+    }
 }
diff --git a/core/src/netwerkprog/game/client/Parser.java b/core/src/netwerkprog/game/client/Parser.java
deleted file mode 100644
index 79849cb..0000000
--- a/core/src/netwerkprog/game/client/Parser.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package netwerkprog.game.client;
-
-import netwerkprog.game.util.data.ParserCallback;
-
-public class Parser {
-    private final ParserCallback callback;
-
-    public Parser(ParserCallback callback) {
-        this.callback = callback;
-    }
-
-    public void parse(String data) {
-        callback.onDataReceived(data);
-    }
-}
diff --git a/core/src/netwerkprog/game/client/game/connections/Client.java b/core/src/netwerkprog/game/client/game/connections/Client.java
new file mode 100644
index 0000000..16167cd
--- /dev/null
+++ b/core/src/netwerkprog/game/client/game/connections/Client.java
@@ -0,0 +1,127 @@
+package netwerkprog.game.client.game.connections;
+
+import netwerkprog.game.util.application.Controller;
+import netwerkprog.game.util.data.ConnectionData;
+import netwerkprog.game.util.data.Data;
+import netwerkprog.game.util.data.DataCallback;
+
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.net.Socket;
+import java.util.Arrays;
+
+public class Client extends Controller {
+    private final int port;
+    private final String hostname;
+    private boolean isConnected;
+    private Socket socket;
+    private Thread receiveThread;
+    private DataCallback callback;
+    private ObjectOutputStream outputStream;
+    private boolean connecting;
+
+    public Client(String hostname, DataCallback callback) {
+        this.port = Data.port();
+        this.hostname = hostname;
+        this.callback = callback;
+    }
+
+    /**
+     * Starts the client process.
+     */
+    @Override
+    public void run() {
+        this.connect();
+        this.receiveThread.start();
+    }
+
+    /**
+     * Connects the client to the server.
+     */
+    public void connect() {
+        System.out.println("[CLIENT] connecting to server on port " + this.port);
+        this.connecting = true;
+        try {
+            this.socket = new Socket(this.hostname, this.port);
+            ObjectInputStream in = new ObjectInputStream(socket.getInputStream());
+            this.outputStream = new ObjectOutputStream(socket.getOutputStream());
+            register(in);
+            this.receiveThread = new Thread( () -> receive(in));
+        } catch (IOException e) {
+            this.connecting = false;
+            System.out.println("[CLIENT] there was an error connecting : " + e.getMessage());
+            StringBuilder sb = new StringBuilder("         Stacktrace : ");
+            Arrays.stream(e.getStackTrace()).forEach(n -> sb.append("\t\t").append(n).append("\n"));
+            System.out.println(sb.toString());
+        }
+    }
+
+    public void register(ObjectInputStream in) {
+        while (connecting) {
+            String username = "DEV";
+            send(new ConnectionData("Connect", username));
+            try {
+                Object object = in.readObject();
+                if (object instanceof Data) {
+                    Data data = (Data) object;
+                    if (data.getPayload() instanceof ConnectionData) {
+                        ConnectionData connectionData = (ConnectionData) data.getPayload();
+                        if (connectionData.getAction().equals("Connect") && connectionData.getMessage().equals("Confirm")){
+                            this.connecting = false;
+                            this.isConnected = true;
+                        }
+                    }
+                }
+            } catch (IOException | ClassNotFoundException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * Sends a message to the server.
+     * @param data The message to send.
+     */
+    public void send(Data data) {
+        try {
+            this.outputStream.writeObject(data);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Receives a message from the server.
+     * @param in The inputStream
+     */
+    public void receive(ObjectInputStream in) {
+        while (isConnected) {
+            try {
+                Object object = in.readObject();
+                if (object instanceof Data) {
+                    callback.onDataReceived((Data) object);
+                }
+            } catch (IOException | ClassNotFoundException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public void disconnect() {
+        this.isConnected = false;
+        try {
+            this.receiveThread.join();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        send(new ConnectionData("Disconnect", "DEV"));
+
+        try {
+            this.socket.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/core/src/netwerkprog/game/server/Parser.java b/core/src/netwerkprog/game/server/Parser.java
deleted file mode 100644
index c4dcb44..0000000
--- a/core/src/netwerkprog/game/server/Parser.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package netwerkprog.game.server;
-
-import netwerkprog.game.client.game.characters.DevTest1;
-import netwerkprog.game.client.game.characters.DevTest2;
-import netwerkprog.game.client.game.characters.DevTest3;
-import netwerkprog.game.server.controllers.DataController;
-import netwerkprog.game.util.data.ParserCallback;
-
-import java.util.Scanner;
-
-public class Parser {
-    private final ParserCallback callback;
-    private Scanner scanner;
-
-    private final DataController dataController;
-
-    public Parser(ParserCallback callback) {
-        this.callback = callback;
-        this.dataController = new DataController();
-
-        this.dataController.addAllCharacters(new DevTest1(), new DevTest2(), new DevTest3());
-    }
-
-    public void parse(String request) {
-        String data = "";
-        this.scanner = new Scanner(request);
-        scanner.useDelimiter("~");
-        String type = scanner.next();
-        String name = scanner.next();
-
-        if (type.equals("character")) {
-            try {
-                data = dataController.getCharacter(name).toString();
-            } catch (IllegalArgumentException ex) {
-                data = ex.getMessage();
-            }
-        }
-
-
-
-        callback.onDataReceived(data);
-    }
-}
diff --git a/core/src/netwerkprog/game/server/Server.java b/core/src/netwerkprog/game/server/Server.java
index 1e48ddb..3326979 100644
--- a/core/src/netwerkprog/game/server/Server.java
+++ b/core/src/netwerkprog/game/server/Server.java
@@ -1,16 +1,19 @@
 package netwerkprog.game.server;
 
+import netwerkprog.game.server.controllers.DataController;
 import netwerkprog.game.server.controllers.SessionController;
 
 import java.util.HashMap;
 
 public class Server {
     private SessionController sessionController;
+    private DataController dataController;
     private Thread sessionThread;
     private HashMap<String, Thread> gameThreads;
 
     public void start() {
-        this.sessionController = new SessionController();
+        this.sessionController = new SessionController(this);
+        this.dataController = new DataController();
 
         this.gameThreads = new HashMap<>();
         this.sessionThread = new Thread(sessionController);
@@ -32,4 +35,8 @@ public class Server {
 //            gameThreads.get(game).start();
 //        }
     }
+
+    public DataController getDataController() {
+        return dataController;
+    }
 }
diff --git a/core/src/netwerkprog/game/server/ServerClient.java b/core/src/netwerkprog/game/server/ServerClient.java
index f937bf4..804594e 100644
--- a/core/src/netwerkprog/game/server/ServerClient.java
+++ b/core/src/netwerkprog/game/server/ServerClient.java
@@ -1,38 +1,35 @@
 package netwerkprog.game.server;
 
+import netwerkprog.game.server.controllers.DataController;
 import netwerkprog.game.server.controllers.SessionController;
-import netwerkprog.game.util.data.ParserCallback;
+import netwerkprog.game.util.data.ConnectionData;
+import netwerkprog.game.util.data.Data;
+import netwerkprog.game.util.data.DataCallback;
 
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
 import java.io.IOException;
-import java.net.Socket;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
 
-public class ServerClient implements Runnable, ParserCallback {
-    private DataInputStream in;
-    private DataOutputStream out;
+public class ServerClient implements Runnable {
+    private ObjectInputStream in;
+    private ObjectOutputStream out;
     private final String name;
     private final SessionController server;
-    private final Parser parser;
+    private final DataCallback callback;
     private boolean isConnected;
 
-    public ServerClient(String name, Socket socket, SessionController server) {
+    public ServerClient(String name, ObjectInputStream in, ObjectOutputStream out, SessionController server, DataController dataController) {
         this.name = name;
         this.server = server;
-        this.parser = new Parser(this);
-        try {
-            this.in = new DataInputStream(socket.getInputStream());
-            this.out = new DataOutputStream(socket.getOutputStream());
-            this.isConnected = true;
-        } catch (IOException e) {
-            this.isConnected = false;
-            e.printStackTrace();
-        }
+        this.callback = dataController;
+        this.in = in;
+        this.out = out;
+        this.isConnected = true;
     }
 
-    public void writeUTF(String text) {
+    public void writeData(Data data) {
         try {
-            this.out.writeUTF(text);
+            this.out.writeObject(data);
         } catch (IOException e) {
             e.printStackTrace();
         }
@@ -42,14 +39,26 @@ public class ServerClient implements Runnable, ParserCallback {
     public void run() {
         while (this.isConnected) {
             try {
-                String received = this.in.readUTF();
-                this.parser.parse(received);
-
+                Object object = this.in.readObject();
+                if (object instanceof Data) {
+                    Data data = (Data) object;
+                    if (data.getPayload() instanceof ConnectionData) {
+                        ConnectionData connectionData = (ConnectionData) data.getPayload();
+                        if (connectionData.getAction().equals("Disconnect")) {
+                            this.isConnected = false;
+                            //todo properly remove thread.
+                        }
+                    } else {
+                        callback.onDataReceived((Data) this.in.readObject());
+                    }
+                }
             } catch (IOException e) {
                 System.out.println("[SERVERCLIENT] caught exception - " + e.getMessage());
                 System.out.println("[SERVERCLIENT] terminating failing connection...");
                 this.isConnected = false;
                 System.out.println("[SERVERCLIENT] done!");
+            } catch (ClassNotFoundException e) {
+                e.printStackTrace();
             }
         }
     }
@@ -57,9 +66,4 @@ public class ServerClient implements Runnable, ParserCallback {
     public String getName() {
         return this.name;
     }
-
-    @Override
-    public void onDataReceived(String data) {
-        writeUTF(data);
-    }
 }
diff --git a/core/src/netwerkprog/game/server/controllers/DataController.java b/core/src/netwerkprog/game/server/controllers/DataController.java
index f1de4bc..ab097a5 100644
--- a/core/src/netwerkprog/game/server/controllers/DataController.java
+++ b/core/src/netwerkprog/game/server/controllers/DataController.java
@@ -1,11 +1,14 @@
 package netwerkprog.game.server.controllers;
 
+import netwerkprog.game.util.data.CharacterData;
+import netwerkprog.game.util.data.Data;
+import netwerkprog.game.util.data.DataCallback;
 import netwerkprog.game.util.game.GameCharacter;
 
 import java.util.Arrays;
 import java.util.HashSet;
 
-public class DataController {
+public class DataController implements DataCallback {
     private final HashSet<GameCharacter> gameCharacters;
 
     public DataController() {
@@ -44,4 +47,15 @@ public class DataController {
         }
         throw new IllegalArgumentException("The character does not exist.");
     }
+
+    @Override
+    public void onDataReceived(Data data) {
+        switch (data.getType()) {
+            case "Character" :
+                if (data.getPayload() instanceof CharacterData) {
+
+                }
+                break;
+        }
+    }
 }
diff --git a/core/src/netwerkprog/game/server/controllers/SessionController.java b/core/src/netwerkprog/game/server/controllers/SessionController.java
index 94a7c0b..4014704 100644
--- a/core/src/netwerkprog/game/server/controllers/SessionController.java
+++ b/core/src/netwerkprog/game/server/controllers/SessionController.java
@@ -1,11 +1,13 @@
 package netwerkprog.game.server.controllers;
 
+import netwerkprog.game.server.Server;
 import netwerkprog.game.server.ServerClient;
 import netwerkprog.game.util.application.Controller;
+import netwerkprog.game.util.data.ConnectionData;
 import netwerkprog.game.util.data.Data;
 
-import java.io.DataInputStream;
 import java.io.IOException;
+import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.net.ServerSocket;
 import java.net.Socket;
@@ -17,12 +19,14 @@ import java.util.Set;
  * The sessionController manages any connections from new clients and assigns individual threads to said clients.
  */
 public class SessionController extends Controller {
+    private Server server;
     private ServerSocket serverSocket;
     private final ArrayList<ServerClient> clients = new ArrayList<>();
     private final HashMap<String, Thread> clientThreads = new HashMap<>();
     private boolean listening;
 
-    public SessionController() {
+    public SessionController(Server server) {
+        this.server = server;
         this.listening = true;
     }
 
@@ -59,43 +63,66 @@ public class SessionController extends Controller {
         try {
             System.out.println("[SERVER] got new client on " + socket.getInetAddress().getHostAddress());
             ObjectOutputStream outputStream = new ObjectOutputStream(socket.getOutputStream());
-            DataInputStream inputStream = new DataInputStream(socket.getInputStream());
+            ObjectInputStream inputStream = new ObjectInputStream(socket.getInputStream());
 
-            outputStream.writeUTF("Enter username: ");
-            String username = inputStream.readUTF();
+            String username = "";
+            boolean registering = true;
+
+            while (registering) {
+                outputStream.writeObject(new ConnectionData("Connect", "Please give a username"));
+                Object object = inputStream.readObject();
+
+                if (object instanceof Data) {
+                    Data data = (Data) object;
+                    if (data instanceof ConnectionData) {
+                        ConnectionData connectionData = (ConnectionData) data.getPayload();
+                        if (connectionData.getAction().equals("Connect")) {
+                            username = connectionData.getMessage();
+                            outputStream.writeObject(new ConnectionData("Connect", "Confirm"));
+                            registering = false;
+                        } else {
+                            //todo error messaging.
+                        }
+                    } else {
+                        //todo error messaging.
+                    }
+                } else {
+                    //todo error messaging.
+                }
+            }
 
             System.out.println("[SERVER] got username " + username);
-            ServerClient serverClient = new ServerClient(username, socket, this);
+            ServerClient serverClient = new ServerClient(username, inputStream, outputStream, this, server.getDataController());
 
             Thread t = new Thread(serverClient);
             t.start();
 
             this.clientThreads.put(username,t);
             this.clients.add(serverClient);
-        } catch (IOException ex) {
+        } catch (IOException | ClassNotFoundException ex) {
             ex.printStackTrace();
         }
     }
 
     /**
      * Sends a server message to all connected clients.
-     * @param text message.
+     * @param data message.
      */
-    public void serverMessage(String text) {
+    public void serverMessage(Data data) {
         for (ServerClient serverClient : clients) {
-            serverClient.writeUTF(text);
+            serverClient.writeData(data);
         }
     }
 
     /**
      * Sends a message to a specific user.
      * @param name user.
-     * @param text message.
+     * @param data message.
      */
-    public void personalMessage(String name, String text) {
+    public void personalMessage(String name, Data data) {
         for (ServerClient serverClient : clients) {
             if (serverClient.getName().equals(name)) {
-                serverClient.writeUTF(text);
+                serverClient.writeData(data);
                 break;
             }
         }
@@ -113,7 +140,7 @@ public class SessionController extends Controller {
             e.printStackTrace();
         }
         this.clientThreads.remove(serverClient.getName());
-        this.serverMessage(serverClient.getName() + " left!");
+        //this.serverMessage(serverClient.getName() + " left!");
     }
 
     /**
diff --git a/core/src/netwerkprog/game/util/data/CharacterData.java b/core/src/netwerkprog/game/util/data/CharacterData.java
new file mode 100644
index 0000000..b89862a
--- /dev/null
+++ b/core/src/netwerkprog/game/util/data/CharacterData.java
@@ -0,0 +1,17 @@
+package netwerkprog.game.util.data;
+
+import netwerkprog.game.util.game.GameCharacter;
+
+import java.io.Serializable;
+
+public class CharacterData extends Data implements Serializable {
+    private final String name;
+    private final GameCharacter character;
+
+    public CharacterData(String name, GameCharacter character) {
+        super("Character");
+        super.setPayload(this);
+        this.name = name;
+        this.character = character;
+    }
+}
diff --git a/core/src/netwerkprog/game/util/data/ConnectionData.java b/core/src/netwerkprog/game/util/data/ConnectionData.java
new file mode 100644
index 0000000..911181f
--- /dev/null
+++ b/core/src/netwerkprog/game/util/data/ConnectionData.java
@@ -0,0 +1,23 @@
+package netwerkprog.game.util.data;
+
+import java.io.Serializable;
+
+public class ConnectionData extends Data implements Serializable {
+    private final String action;
+    private final String message;
+
+    public ConnectionData(String action, String message) {
+        super("Connection");
+        super.setPayload(this);
+        this.action = action;
+        this.message = message;
+    }
+
+    public String getAction() {
+        return action;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}
diff --git a/core/src/netwerkprog/game/util/data/Data.java b/core/src/netwerkprog/game/util/data/Data.java
index 2bdcce4..24ed738 100644
--- a/core/src/netwerkprog/game/util/data/Data.java
+++ b/core/src/netwerkprog/game/util/data/Data.java
@@ -1,7 +1,32 @@
 package netwerkprog.game.util.data;
 
-public class Data {
+import java.io.Serializable;
+
+public class Data implements Serializable {
     public static int port() {
         return 8000;
     }
+
+    private String objectType;
+    private Data payload;
+
+    public Data(String type) {
+        this.objectType = type;
+    }
+
+    public void setObjectType(String objectType) {
+        this.objectType = objectType;
+    }
+
+    public void setPayload(Data payload) {
+        this.payload = payload;
+    }
+
+    public String getType() {
+        return objectType;
+    }
+
+    public Data getPayload() {
+        return payload;
+    }
 }
diff --git a/core/src/netwerkprog/game/util/data/DataCallback.java b/core/src/netwerkprog/game/util/data/DataCallback.java
new file mode 100644
index 0000000..95b2d88
--- /dev/null
+++ b/core/src/netwerkprog/game/util/data/DataCallback.java
@@ -0,0 +1,5 @@
+package netwerkprog.game.util.data;
+
+public interface DataCallback {
+    void onDataReceived(Data data);
+}
diff --git a/core/src/netwerkprog/game/util/game/GameCharacter.java b/core/src/netwerkprog/game/util/game/GameCharacter.java
index 4715e86..282533e 100644
--- a/core/src/netwerkprog/game/util/game/GameCharacter.java
+++ b/core/src/netwerkprog/game/util/game/GameCharacter.java
@@ -5,13 +5,14 @@ import com.badlogic.gdx.graphics.g2d.TextureRegion;
 import com.badlogic.gdx.scenes.scene2d.Actor;
 import netwerkprog.game.client.game.map.GameTile;
 
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Objects;
 
-public abstract class GameCharacter extends Actor implements Comparable<GameCharacter> {
+public abstract class GameCharacter extends Actor implements Comparable<GameCharacter>, Serializable {
     protected String name;
     protected Faction faction;
     protected HashSet<Ability> abilities;
diff --git a/core/src/test/java/RestartSessionControllerTest.java b/core/src/test/java/RestartSessionControllerTest.java
index efd4ede..9d5f5b2 100644
--- a/core/src/test/java/RestartSessionControllerTest.java
+++ b/core/src/test/java/RestartSessionControllerTest.java
@@ -8,7 +8,7 @@ public class RestartSessionControllerTest {
         SessionController sessionController;
         Thread sessionThread;
 
-        sessionController = new SessionController();
+        sessionController = new SessionController(null);
         sessionThread = new Thread(sessionController);
 
         sessionThread.start();