diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c
index 338049eed4ad..8e4aadf14c9f 100644
--- a/arch/arm/mach-shmobile/pm-sh7372.c
+++ b/arch/arm/mach-shmobile/pm-sh7372.c
@@ -25,7 +25,7 @@
 #define SBAR 0xe6180020
 #define APARMBAREA 0xe6f10020
 
-void sh7372_enter_core_standby(void)
+static void sh7372_enter_core_standby(void)
 {
 	void __iomem *smfram = (void __iomem *)SMFRAM;