diff -r ba912ef24b27 -r 984f8ed9e514 launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/impl/Console.java
--- a/launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/impl/Console.java	Wed Apr 30 15:04:10 2014 +0200
+++ b/launcher/http/src/main/java/org/apidesign/bck2brwsr/launcher/impl/Console.java	Mon May 05 12:25:44 2014 +0200
@@ -266,7 +266,7 @@
         return u;
     }
     
-    @JavaScriptBody(args = {}, body = "vm.desiredAssertionStatus = true;")
+    @JavaScriptBody(args = {}, body = "vm.java_lang_Class(false).desiredAssertionStatus = true;")
     private static void turnAssetionStatusOn() {
     }