diff --git a/src/host.js b/src/host.js
index 1714a1c..3211ba7 100644
--- a/src/host.js
+++ b/src/host.js
@@ -56,6 +56,10 @@ Host.prototype.connect = function connect() {
 	var me = this;
 	return new Promise(function(resolve/*, reject*/) {
 		me.onEvent('ready', function() {
+			if (me._isConnected) {
+				return;
+			}
+
 			resolve(Port.prototype.connect.call(me));
 		});
 		me.open();