diff --git a/tetris.py b/tetris.py
index 5a9d6d9..7cfdc9f 100644
--- a/tetris.py
+++ b/tetris.py
@@ -10,7 +10,8 @@
 play_height = 600  
 block_size = 30
  
-top_left_x = (s_width - play_width) // 2
+ wdif=(s_width - play_width)
+top_left_x = wdif // 2
 top_left_y = s_height - play_height