diff --git a/net/xfrm/xfrm_iptfs.c b/net/xfrm/xfrm_iptfs.c
index ad810d1f97c0..597aedeac26e 100644
--- a/net/xfrm/xfrm_iptfs.c
+++ b/net/xfrm/xfrm_iptfs.c
@@ -480,6 +480,7 @@ static int iptfs_skb_add_frags(struct sk_buff *skb,
 		}
 		__skb_frag_ref(tofrag);
 		shinfo->nr_frags++;
+		shinfo->flags |= SKBFL_SHARED_FRAG;
 
 		/* see if we are done */
 		fraglen = tofrag->len;