diff --git a/overcooked_simulator/gui_2d_vis/overcooked_gui.py b/overcooked_simulator/gui_2d_vis/overcooked_gui.py
index 1cae4e0dec3393dd1e8ae67af9085d876379489e..95ac1956f0b1b5d74bd6d527868fbc3e88302a90 100644
--- a/overcooked_simulator/gui_2d_vis/overcooked_gui.py
+++ b/overcooked_simulator/gui_2d_vis/overcooked_gui.py
@@ -118,10 +118,7 @@ class PyGameGUI:
         self.window_height = self.visualization_config["GameWindow"]["start_height"]
 
         self.main_window = pygame.display.set_mode(
-            (
-                self.window_width,
-                self.window_height,
-            )
+            (self.window_width, self.window_height)
         )
 
         self.game_width, self.game_height = 0, 0
@@ -141,6 +138,7 @@ class PyGameGUI:
             )
             game_height = int(game_width * kitchen_aspect_ratio)
             grid_size = int(game_width / self.simulator.env.kitchen_width)
+
         elif self.visualization_config["GameWindow"]["WhatIsFixed"] == "grid":
             grid_size = self.visualization_config["GameWindow"]["size"]
             game_width, game_height = (
@@ -156,7 +154,7 @@ class PyGameGUI:
             game_height + (2 * self.screen_margin),
         )
 
-        return window_width, window_height, game_width, game_height, grid_size
+        return int(window_width), int(window_height), game_width, game_height, grid_size
 
     def create_player_colors(self) -> list[Color]:
         number_player = len(self.simulator.env.players)
diff --git a/overcooked_simulator/gui_2d_vis/visualization.yaml b/overcooked_simulator/gui_2d_vis/visualization.yaml
index bd1a09aedbde01b56c6fa7699b2a59c2abd22bd9..79df279ba57562e2c573d9b4189b19e6e5168fce 100644
--- a/overcooked_simulator/gui_2d_vis/visualization.yaml
+++ b/overcooked_simulator/gui_2d_vis/visualization.yaml
@@ -1,8 +1,8 @@
 # colors: https://www.webucator.com/article/python-color-constants-module/
 
 GameWindow:
-  WhatIsFixed: window_width  # entweder grid oder window_width
-  size: 600
+  WhatIsFixed: grid  # entweder grid oder window_width
+  size: 65
   screen_margin: 100
   start_width: 600
   start_height: 600