diff -r 9359b006782b -r dc07c9001184 emul/src/main/java/java/lang/String.java
--- a/emul/src/main/java/java/lang/String.java	Mon Jan 14 11:30:56 2013 +0100
+++ b/emul/src/main/java/java/lang/String.java	Mon Jan 21 12:53:05 2013 +0100
@@ -994,7 +994,7 @@
      * @see  #equalsIgnoreCase(String)
      */
     @JavaScriptBody(args = { "obj" }, body = 
-        "return obj.$instOf_java_lang_String && "
+        "return obj != null && obj.$instOf_java_lang_String && "
         + "this.toString() === obj.toString();"
     )
     public boolean equals(Object anObject) {