diff --git a/include/net/tcp.h b/include/net/tcp.h
index c3f4f6a9e6c3..fed2a78fb8cb 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1526,6 +1526,7 @@ static inline void tcp_write_queue_purge(struct sock *sk)
 		sk_wmem_free_skb(sk, skb);
 	sk_mem_reclaim(sk);
 	tcp_clear_all_retrans_hints(tcp_sk(sk));
+	inet_csk(sk)->icsk_backoff = 0;
 }
 
 static inline struct sk_buff *tcp_write_queue_head(const struct sock *sk)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 9de77d946f5a..2ededb32b754 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2292,7 +2292,6 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tp->write_seq += tp->max_window + 2;
 	if (tp->write_seq == 0)
 		tp->write_seq = 1;
-	icsk->icsk_backoff = 0;
 	tp->snd_cwnd = 2;
 	icsk->icsk_probes_out = 0;
 	tp->packets_out = 0;