diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f931def6302e3..e8b48df73c852 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3338,6 +3338,7 @@ int tcp_set_window_clamp(struct sock *sk, int val)
 	} else {
 		tp->window_clamp = val < SOCK_MIN_RCVBUF / 2 ?
 			SOCK_MIN_RCVBUF / 2 : val;
+		tp->rcv_ssthresh = min(tp->rcv_wnd, tp->window_clamp);
 	}
 	return 0;
 }