--- a/nashorn/src/jdk/nashorn/internal/objects/NativeTypeError.java	Sat Feb 09 16:58:48 2013 +0100
+++ b/nashorn/src/jdk/nashorn/internal/objects/NativeTypeError.java	Mon Feb 11 21:26:06 2013 +0530
@@ -40,7 +40,7 @@
  *
  */
 @ScriptClass("Error")
-public class NativeTypeError extends ScriptObject {
+public final class NativeTypeError extends ScriptObject {
 
     /** message property in instance */
     @Property(name = NativeError.MESSAGE)