diff --git a/lib/node.js b/lib/node.js
index 68c1c35..066bf1f 100644
--- a/lib/node.js
+++ b/lib/node.js
@@ -44,7 +44,7 @@ class Node extends EventEmitter {
 		for(let port = config.ports.relay; port <= config.ports.relayEnd; port ++) {
 			if(takenPorts.indexOf(port) === -1) {
 				console.log('registering to port ' + port);
-				await upnp.mapIndefinite(port, 10, this.name);
+				await upnp.mapIndefinite(port, this.name);
 				break;
 			} else {
 				console.log('port ' + port + ' is taken...');
diff --git a/lib/upnp.js b/lib/upnp.js
index ca466f8..918af49 100644
--- a/lib/upnp.js
+++ b/lib/upnp.js
@@ -15,7 +15,7 @@ module.exports.map = function(port, ttl = 10, name = 'upnp application') {
 	});
 };
 
-module.exports.mapIndefinite = function(port, name) {
+module.exports.mapIndefinite = function(port, name = 'upnp application') {
 	return new Promise((res, rej) => {
 		client.portMapping({
 			private: port,