diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c
index 476b578731d0..1c0d73ac76dd 100644
--- a/sys/netinet/tcp_usrreq.c
+++ b/sys/netinet/tcp_usrreq.c
@@ -1158,6 +1158,16 @@ tcp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
 		m_freem(control);
 		return error;
 	}
+	if (tp->t_template == NULL) {
+		/*
+		 * XXX FreeBSD appears to open the connection
+		 * automagically in this case, but the socket address
+		 * isn't passed through here so we can't do that.
+		 */
+		m_freem(m);
+		m_freem(control);
+		return ENOTCONN;
+	}
 
 	ostate = tcp_debug_capture(tp, PRU_SENDOOB);