--- old/src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp	2010-11-16 18:11:07.000000000 +0100
+++ new/src/share/vm/gc_implementation/g1/concurrentG1RefineThread.hpp	2010-11-16 18:11:06.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,6 +22,11 @@
  *
  */
 
+#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP
+
+#include "gc_implementation/shared/concurrentGCThread.hpp"
+
 // Forward Decl.
 class ConcurrentG1Refine;
 
@@ -84,3 +89,5 @@
   // shutdown
   void stop();
 };
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_G1_CONCURRENTG1REFINETHREAD_HPP