diff --git a/contrib/netbsd-tests/lib/libc/sys/t_listen.c b/contrib/netbsd-tests/lib/libc/sys/t_listen.c
index d7c7d9e02d4f..a9ee733c737e 100644
--- a/contrib/netbsd-tests/lib/libc/sys/t_listen.c
+++ b/contrib/netbsd-tests/lib/libc/sys/t_listen.c
@@ -110,6 +110,9 @@ ATF_TC_BODY(listen_low_port, tc)
 	int sd, val;
 
 	sd = socket(AF_INET, SOCK_STREAM, 0);
+#ifdef	__FreeBSD__
+	ATF_REQUIRE_MSG(sd != -1, "socket failed: %s", strerror(errno));
+#endif
 
 	val = IP_PORTRANGE_LOW;
 	if (setsockopt(sd, IPPROTO_IP, IP_PORTRANGE, &val,