diff --git a/GameMap.py b/GameMap.py
index 35cbc09..ec7c442 100644
--- a/GameMap.py
+++ b/GameMap.py
@@ -19,7 +19,6 @@ class GameMap:
     
     def add_mark(self, x, y, player):
         if (x <= self.max_size_x and y <= self.max_size_y) and (x >= 0 and y >= 0):
-            self.data[(x,y)] = player
             if (x, y) not in self.data:
                 self.data[(x,y)] = player
             else: