diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 493e42755535bdaefbc4c423853ed7b3f76b586a..8f04d2eb2799fa02b7ba3c47465da30c0a89fa7c 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -5639,6 +5639,8 @@ void tcp_rcv_established(struct sock *sk, struct sk_buff *skb)
 				tcp_data_snd_check(sk);
 				if (!inet_csk_ack_scheduled(sk))
 					goto no_ack;
+			} else {
+				tcp_update_wl(tp, TCP_SKB_CB(skb)->seq);
 			}
 
 			__tcp_ack_snd_check(sk, 0);