diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index e0d7b99..4969b60 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -21,6 +21,7 @@
 #include <linux/bcd.h>
 #include <linux/clk.h>
 #include <linux/log2.h>
+#include <linux/slab.h>
 
 #include <mach/hardware.h>
 #include <asm/uaccess.h>