diff -r b4354a30d4dd -r fd47ec497fb2 emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/lang/System.java
--- a/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/lang/System.java	Tue Feb 05 10:19:10 2013 +0100
+++ b/emul/mini/src/main/java/org/apidesign/bck2brwsr/emul/lang/System.java	Wed Feb 06 15:41:19 2013 +0100
@@ -45,7 +45,7 @@
     )
     public static native byte[] expandArray(byte[] arr, int expectedSize);
 
-    @JavaScriptBody(args = {}, body = "new Date().getMilliseconds();")
+    @JavaScriptBody(args = {}, body = "return new Date().getMilliseconds();")
     public static native long currentTimeMillis();
     
     public static long nanoTime() {