diff --git a/src/dns.c b/src/dns.c
index bc40b29e8..e1f9539e9 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -75,8 +75,10 @@ static int dns_connect_nameserver(struct dns_nameserver *ns)
 		dgram->t.sock.fd = fd;
 		fd_insert(fd, dgram, dgram_fd_handler, MAX_THREADS_MASK);
 		fd_want_recv(fd);
+		return 0;
 	}
-	return 0;
+
+	return -1;
 }
 
 /* Sends a message to a name server