diff --git a/drivers/watchdog/s5p_wdt.c b/drivers/watchdog/s5p_wdt.c
index 5ad7d2609f0..80524a00101 100644
--- a/drivers/watchdog/s5p_wdt.c
+++ b/drivers/watchdog/s5p_wdt.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <asm/io.h>
+#include <asm/arch/cpu.h>
 #include <asm/arch/watchdog.h>
 
 #define PRESCALER_VAL 255