diff --git a/lib/node.js b/lib/node.js
index 45b74f4..68c1c35 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.map(port, 10, this.name);
+				await upnp.mapIndefinite(port, 10, this.name);
 				break;
 			} else {
 				console.log('port ' + port + ' is taken...');