diff --git a/slirp/tcp_input.c b/slirp/tcp_input.c
index c1214c065..5a79c6834 100644
--- a/slirp/tcp_input.c
+++ b/slirp/tcp_input.c
@@ -610,6 +610,7 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso)
 	    so->so_ti = ti;
 	    tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
 	    tp->t_state = TCPS_SYN_RECEIVED;
+	    tcp_template(tp);
 	  }
 	  return;