diff --git a/net/core/datagram.c b/net/core/datagram.c
index 95c2e08..2dccd4e 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -48,6 +48,7 @@
 #include <linux/poll.h>
 #include <linux/highmem.h>
 #include <linux/spinlock.h>
+#include <linux/slab.h>
 
 #include <net/protocol.h>
 #include <linux/skbuff.h>