diff --git a/extra/webkit-demo/webkit-demo.factor b/extra/webkit-demo/webkit-demo.factor
index 728764226e..e6178a55c3 100644
--- a/extra/webkit-demo/webkit-demo.factor
+++ b/extra/webkit-demo/webkit-demo.factor
@@ -1,12 +1,7 @@
 ! Copyright (C) 2008, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: kernel
-cocoa
-cocoa.application
-cocoa.types
-cocoa.classes
-cocoa.windows
-core-graphics.types ;
+USING: cocoa cocoa.application cocoa.types cocoa.classes cocoa.windows
+core-graphics.types kernel math.bitwise ;
 IN: webkit-demo
 
 FRAMEWORK: /System/Library/Frameworks/WebKit.framework
@@ -18,8 +13,16 @@ IMPORT: WebView
     WebView -> alloc
     rect f f -> initWithFrame:frameName:groupName: ;
 
+: window-style ( -- n )
+    {
+        NSClosableWindowMask
+        NSMiniaturizableWindowMask
+        NSResizableWindowMask
+        NSTitledWindowMask
+    } flags ;
+
 : <WebWindow> ( -- id )
-    <WebView> rect <ViewWindow> ;
+    <WebView> rect window-style <ViewWindow> ;
 
 : load-url ( window url -- )
     [ -> contentView ] [ <NSString> ] bi* -> setMainFrameURL: ;