diff --git a/include/asm-um/ldt-x86_64.h b/include/asm-um/ldt-x86_64.h
index 175722a..57159f1 100644
--- a/include/asm-um/ldt-x86_64.h
+++ b/include/asm-um/ldt-x86_64.h
@@ -5,8 +5,8 @@
  * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
  */
 
-#ifndef __ASM_LDT_I386_H
-#define __ASM_LDT_I386_H
+#ifndef __ASM_LDT_X86_64_H
+#define __ASM_LDT_X86_64_H
 
 #include "asm/semaphore.h"
 #include "asm/arch/ldt.h"