diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index f2e8319a6b0b..f250d1c3f8a0 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -1,5 +1,12 @@
+#ifndef _ASM_X86_SMP_H_
+#define _ASM_X86_SMP_H_
+#ifndef __ASSEMBLY__
+
 #ifdef CONFIG_X86_32
 # include "smp_32.h"
 #else
 # include "smp_64.h"
 #endif
+
+#endif /* __ASSEMBLY__ */
+#endif