diff --git a/sys/kern/uipc_usrreq.c b/sys/kern/uipc_usrreq.c
index 773669988cc8..2736ade94906 100644
--- a/sys/kern/uipc_usrreq.c
+++ b/sys/kern/uipc_usrreq.c
@@ -897,7 +897,7 @@ uipc_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
 			from = &sun_noname;
 		so2 = unp2->unp_socket;
 		SOCKBUF_LOCK(&so2->so_rcv);
-		if (sbappendaddr_nospacecheck_locked(&so2->so_rcv, from, m,
+		if (sbappendaddr_locked(&so2->so_rcv, from, m,
 		    control)) {
 			sorwakeup_locked(so2);
 			m = NULL;