diff --git a/src/tictactoe.py b/src/tictactoe.py
index 716f5dcd2..47db0ebf4 100644
--- a/src/tictactoe.py
+++ b/src/tictactoe.py
@@ -327,7 +327,7 @@ class TicTacToeBoard:
 		if not self.session.is_my_turn():
 			return
 
-		(height, width) = widget.get_size()
+		(width, height) = widget.get_size()
 
 		# convert click co-ordinates to row and column