diff --git a/AppKit/CPAlert.j b/AppKit/CPAlert.j
index 4df69bc0e..37208a12e 100644
--- a/AppKit/CPAlert.j
+++ b/AppKit/CPAlert.j
@@ -642,6 +642,7 @@ var bottomHeight = 71;
 
     _window = [[CPPanel alloc] initWithContentRect:frame styleMask:forceStyle || _defaultWindowStyle];
     [_window setLevel:CPStatusWindowLevel];
+    [_window setPlatformWindow:[[CPApp keyWindow] platformWindow]];
 
     if (_title)
         [_window setTitle:_title];