diff --git a/server/src/main/java/fr/lnl/game/server/games/Game.java b/server/src/main/java/fr/lnl/game/server/games/Game.java
index 58b918f..1406c89 100644
--- a/server/src/main/java/fr/lnl/game/server/games/Game.java
+++ b/server/src/main/java/fr/lnl/game/server/games/Game.java
@@ -23,12 +23,16 @@ public class Game {
     private Action selectedAction = null;
 
     public Game(Grid grid, List<Player> players, ModelListener gameFinishEvent) throws IllegalArgumentException {
-        if(players.size() < 2 || players.size() > grid.getNumberNeutralBox())
+        if(players.size() < 2)
             throw new IllegalArgumentException("The game need 2 or more player to start");
+        if(players.size() > grid.getNumberNeutralBox()){
+            throw new IllegalArgumentException("There are too many players for the number of box available");
+        }
         this.players = players;
         this.currentPlayer = players.get(0);
         this.grid = grid;
         this.gameFinishEvent = gameFinishEvent;
+        this.grid.initPlacePlayers();
         currentPlayer.setActions(generateAndGetPlayerActions(currentPlayer));
     }
 
diff --git a/server/src/main/java/fr/lnl/game/server/games/player/AbstractPlayer.java b/server/src/main/java/fr/lnl/game/server/games/player/AbstractPlayer.java
index 7f85b36..41dcfdd 100644
--- a/server/src/main/java/fr/lnl/game/server/games/player/AbstractPlayer.java
+++ b/server/src/main/java/fr/lnl/game/server/games/player/AbstractPlayer.java
@@ -87,6 +87,9 @@ public abstract class AbstractPlayer implements Player {
 
     @Override
     public void setPosition(Point position){
+        if(position == null){
+            throw new IllegalArgumentException("Position is null");
+        }
         this.position = position;
     }
 
diff --git a/server/src/test/java/fr/lnl/game/server/Mock.java b/server/src/test/java/fr/lnl/game/server/Mock.java
index a7f5526..98644cb 100644
--- a/server/src/test/java/fr/lnl/game/server/Mock.java
+++ b/server/src/test/java/fr/lnl/game/server/Mock.java
@@ -23,9 +23,6 @@ public class Mock {
         List<Player> players = Arrays.asList(new RandomComputerPlayer(1,null, ClassPlayer.DEFAULT),
                 new RandomComputerPlayer(2,null, ClassPlayer.DEFAULT));
         this.grid = new Grid(16,16, players,0.80F, 0.95F);
-        placePlayersBRUT();
-        placeEnergyBallBRUT();
-        placeInternWallBRUT();
         game = new Game(grid, players, new GameFinishEvent());
     }