diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 820761f..702fa8f 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -463,6 +463,7 @@
 	memcpy(n->cb, skb->cb, sizeof(skb->cb));
 	C(len);
 	C(data_len);
+	C(mac_len);
 	C(csum);
 	C(local_df);
 	n->cloned = 1;