diff --git a/flatland/utils/graphics_pil.py b/flatland/utils/graphics_pil.py
index 5548d6f1a67802a7ad5b3d1d7edb1d773bb0836b..fbac4355998b4cd17647248d28392040b633637c 100644
--- a/flatland/utils/graphics_pil.py
+++ b/flatland/utils/graphics_pil.py
@@ -1,5 +1,6 @@
 import io
 import os
+import platform
 import time
 import tkinter as tk
 
@@ -45,9 +46,14 @@ class PILGL(GraphicsLayer):
         if jupyter is False:
             self.screen_width = 99999
             self.screen_height = 99999
-            for m in get_monitors():
-                self.screen_height = min(self.screen_height, m.height)
-                self.screen_width = min(self.screen_width, m.width)
+
+            if platform.system() == "Windows" or platform.system() == "Linux":
+                for m in get_monitors():
+                    self.screen_height = min(self.screen_height, m.height)
+                    self.screen_width = min(self.screen_width, m.width)
+            else:
+                self.screen_width = 800
+                self.screen_height = 600
 
             w = (self.screen_width - self.width - 10) / (self.width + 1 + self.linewidth)
             h = (self.screen_height - self.height - 10) / (self.height + 1 + self.linewidth)