diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 29155384d5a81ad6b24dd622808d348000817b80..14735d5ede5201662ca6c02cd7e84cea0f43b38e 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -39,6 +39,7 @@
 #include <asm/irq.h>
 #include <asm/setup.h>
 #include <asm/clock.h>
+#include <asm/smp.h>
 #include <asm/mmu_context.h>
 
 /*