diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index d4ee0a6bdc86..5b953e26a586 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -1277,6 +1277,7 @@ static int mptcp_sendmsg_frag(struct sock *sk, struct sock *ssk,
 		mpext = skb_ext_find(skb, SKB_EXT_MPTCP);
 		if (!mptcp_skb_can_collapse_to(data_seq, skb, mpext)) {
 			TCP_SKB_CB(skb)->eor = 1;
+			tcp_mark_push(tcp_sk(ssk), skb);
 			goto alloc_skb;
 		}