diff --git a/AppKit/CPMenu.j b/AppKit/CPMenu.j
index 3c899a024..a9cdd64bb 100644
--- a/AppKit/CPMenu.j
+++ b/AppKit/CPMenu.j
@@ -1985,7 +1985,7 @@ var _CPMenuBarWindowBackgroundColor = nil,
 
     [super setFrame:aRect display:shouldDisplay animate:shouldAnimate];
 
-    if (_CGSizeEqualToSize(size, aRect.size))
+    if (!_CGSizeEqualToSize(size, aRect.size))
         [self tile];
 }