--- old/src/cpu/x86/vm/interp_masm_x86_64.hpp	2010-11-10 12:58:15.000000000 +0100
+++ new/src/cpu/x86/vm/interp_masm_x86_64.hpp	2010-11-10 12:58:15.000000000 +0100
@@ -22,6 +22,12 @@
  *
  */
 
+#ifndef CPU_X86_VM_INTERP_MASM_X86_64_HPP
+#define CPU_X86_VM_INTERP_MASM_X86_64_HPP
+
+#include "assembler_x86.inline.hpp"
+#include "interpreter/invocationCounter.hpp"
+
 // This file specializes the assember with interpreter-specific macros
 
 
@@ -243,3 +249,5 @@
   void notify_method_entry();
   void notify_method_exit(TosState state, NotifyMethodExitMode mode);
 };
+
+#endif // CPU_X86_VM_INTERP_MASM_X86_64_HPP