diff --git a/arch/arm/mach-imx/cpu_op-mx51.c b/arch/arm/mach-imx/cpu_op-mx51.c
index 9d34c3d..9a4f77a 100644
--- a/arch/arm/mach-imx/cpu_op-mx51.c
+++ b/arch/arm/mach-imx/cpu_op-mx51.c
@@ -14,6 +14,7 @@
 #include <linux/types.h>
 #include <mach/hardware.h>
 #include <linux/kernel.h>
+#include <linux/bug.h>
 
 static struct cpu_op mx51_cpu_op[] = {
 	{