diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index e2bec81..bb32668 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -5983,6 +5983,7 @@
 				 * need req so release it.
 				 */
 				if (req) {
+					tcp_synack_rtt_meas(sk, req);
 					reqsk_fastopen_remove(sk, req, false);
 				} else {
 					/* Make sure socket is routed, for