diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 432c366..036f857 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -5646,6 +5646,7 @@
 		tcp_rearm_rto(sk);
 		return true;
 	}
+	tp->syn_data_acked = tp->syn_data;
 	return false;
 }