diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 8abb425d8b5f..1e413426deee 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -2798,6 +2798,12 @@ static void mptcp_do_fastclose(struct sock *sk)
 			goto unlock;
 
 		subflow->send_fastclose = 1;
+
+		/* Initialize rcv_mss to TCP_MIN_MSS to avoid division by 0
+		 * issue in __tcp_select_window(), see tcp_disconnect().
+		 */
+		inet_csk(ssk)->icsk_ack.rcv_mss = TCP_MIN_MSS;
+
 		tcp_send_active_reset(ssk, ssk->sk_allocation,
 				      SK_RST_REASON_TCP_ABORT_ON_CLOSE);
 unlock: