--- old/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java	2014-06-03 10:07:22.418498513 +0530
+++ new/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java	2014-06-03 10:07:21.978496335 +0530
@@ -502,7 +502,7 @@
     public void setProto(final Object proto) {
         inGlobal(new Callable<Void>() {
             @Override public Void call() {
-                sobj.setProtoCheck(unwrap(proto, global));
+                sobj.setPrototypeOf(unwrap(proto, global));
                 return null;
             }
         });