--- a/src/gui/kernel/qwidget_mac.mm	2011-12-08 09:06:02.000000000 +0400
+++ b/src/gui/kernel/qwidget_mac.mm	2012-02-20 15:01:47.000000000 +0400
@@ -236,10 +236,13 @@
 {
 #ifdef QT_MAC_USE_COCOA
     NSWindow *window = [view window];
-    if ([window contentView] == view)
+    if ([window contentView] == view) {
         [window setContentView:[[NSView alloc] initWithFrame:[view bounds]]];
-    [view removeFromSuperview];
-    [view release];
+    }
+    else {
+        [view removeFromSuperview];
+        [view release];
+    }
 #else
     HIViewRemoveFromSuperview(view);
     CFRelease(view);