diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index f0c86398e6a7..2ac23da42dd2 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -393,6 +393,9 @@ static void tcp_fastopen_synack_timer(struct sock *sk)
 		tcp_write_err(sk);
 		return;
 	}
+	/* Lower cwnd after certain SYNACK timeout like tcp_init_transfer() */
+	if (icsk->icsk_retransmits == 1)
+		tcp_enter_loss(sk);
 	/* XXX (TFO) - Unlike regular SYN-ACK retransmit, we ignore error
 	 * returned from rtx_syn_ack() to make it more persistent like
 	 * regular retransmit because if the child socket has been accepted