diff -r ffdc7659d8ff -r 5652acd48509 emul/mini/src/main/java/java/net/URL.java
--- a/emul/mini/src/main/java/java/net/URL.java	Fri Feb 01 21:25:42 2013 +0100
+++ b/emul/mini/src/main/java/java/net/URL.java	Mon Feb 25 19:00:08 2013 +0100
@@ -1053,7 +1053,7 @@
     }
     
     @JavaScriptBody(args = {}, body = 
-          "if (!window) return null;\n"
+          "if (typeof window !== 'object') return null;\n"
         + "if (!window.location) return null;\n"
         + "if (!window.location.href) return null;\n"
         + "return window.location.href;\n"