diff --git a/net/x25/x25_dev.c b/net/x25/x25_dev.c
index 52e3042..b9ef682 100644
--- a/net/x25/x25_dev.c
+++ b/net/x25/x25_dev.c
@@ -20,6 +20,7 @@
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
+#include <linux/slab.h>
 #include <net/sock.h>
 #include <linux/if_arp.h>
 #include <net/x25.h>