diff --git a/include/net/tcp.h b/include/net/tcp.h
index cdef98f089fc..3289ca9d8c72 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1354,6 +1354,7 @@ 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 44c0b3bc172c..cbfce7e394fe 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2329,7 +2329,6 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tp->srtt = 0;
 	if ((tp->write_seq += tp->max_window + 2) == 0)
 		tp->write_seq = 1;
-	icsk->icsk_backoff = 0;
 	tp->snd_cwnd = 2;
 	icsk->icsk_probes_out = 0;
 	tp->packets_out = 0;