diff --git a/lib/index.js b/lib/index.js
index 9cc3d4189..09ed139ae 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -718,7 +718,8 @@ NwBuilder.prototype.runApp = function () {
 
     self.emit('log', 'Launching App');
     return new Promise(function(resolve, reject) {
-        var nwProcess = self._nwProcess = spawn(executable, ['--enable-logging', self.options.files.replace(/\*[\/\*]*/,"")].concat(self.options.argv));
+        var parentDirectory = (_.isArray(self.options.files) ? self.options.files[0] : self.options.files ).replace(/\*[\/\*]*/,"");
+        var nwProcess = self._nwProcess = spawn(executable, ['--enable-logging', parentDirectory].concat(self.options.argv));
 
         self.emit('appstart');