1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index bb3f234668b3..f6ba07f0d816 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1240,7 +1240,7 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
         tp->left_out = tp->sacked_out + tp->lost_out;
 
         if ((reord < tp->fackets_out) && icsk->icsk_ca_state != TCP_CA_Loss &&
-            (tp->frto_highmark && after(tp->snd_una, tp->frto_highmark)))
+            (!tp->frto_highmark || after(tp->snd_una, tp->frto_highmark)))
                 tcp_update_reordering(sk, ((tp->fackets_out + 1) - reord), 0);
 
 #if FASTRETRANS_DEBUG > 0