diff --git a/drivers/crypto/chelsio/chtls/chtls_cm.c b/drivers/crypto/chelsio/chtls/chtls_cm.c
index f200fae6f7cb..fd5c558c6c23 100644
--- a/drivers/crypto/chelsio/chtls/chtls_cm.c
+++ b/drivers/crypto/chelsio/chtls/chtls_cm.c
@@ -1056,6 +1056,7 @@ static void chtls_pass_accept_rpl(struct sk_buff *skb,
 	opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO);
 	opt2 |= T5_ISS_F;
 	opt2 |= T5_OPT_2_VALID_F;
+	opt2 |= WND_SCALE_EN_V(WSCALE_OK(tp));
 	rpl5->opt0 = cpu_to_be64(opt0);
 	rpl5->opt2 = cpu_to_be32(opt2);
 	rpl5->iss = cpu_to_be32((prandom_u32() & ~7UL) - 1);