diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 003a65395bd5b31e3d38329962ffc3cbc8c29807..b9c9ea0217a9b1fd4581f27fed692aaa6fe167ee 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -20,6 +20,7 @@
 #include <asm/pat.h>
 #include <asm/asm.h>
 #include <asm/numa.h>
+#include <asm/smp.h>
 #ifdef CONFIG_X86_LOCAL_APIC
 #include <asm/mpspec.h>
 #include <asm/apic.h>