--- old/src/share/vm/ci/ciNullObject.hpp	2010-11-16 18:08:52.000000000 +0100
+++ new/src/share/vm/ci/ciNullObject.hpp	2010-11-16 18:08:52.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2000, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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 +22,13 @@
  *
  */
 
+#ifndef SHARE_VM_CI_CINULLOBJECT_HPP
+#define SHARE_VM_CI_CINULLOBJECT_HPP
+
+#include "ci/ciClassList.hpp"
+#include "ci/ciObject.hpp"
+#include "ci/ciUtilities.hpp"
+
 // ciNullObject
 //
 // This class represents a null reference in the VM.
@@ -47,3 +54,5 @@
   // Get the distinguished instance of this klass.
   static ciNullObject* make();
 };
+
+#endif // SHARE_VM_CI_CINULLOBJECT_HPP