diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 8160d9c..e8f6e3b 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -14,6 +14,7 @@
 #include <linux/list.h>
 #include <linux/rcupdate.h>
 #include <linux/rtnetlink.h>
+#include <linux/slab.h>
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
 #include "driver-ops.h"