diff --git a/drivers/net/slip.c b/drivers/net/slip.c
index ba5bbc5..8969615 100644
--- a/drivers/net/slip.c
+++ b/drivers/net/slip.c
@@ -83,6 +83,7 @@
 #include <linux/compat.h>
 #include <linux/delay.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include "slip.h"
 #ifdef CONFIG_INET
 #include <linux/ip.h>