diff --git a/src/js/client.js b/src/js/client.js
index 375af9025..2254223c6 100644
--- a/src/js/client.js
+++ b/src/js/client.js
@@ -1996,6 +1996,7 @@ angular.module('Application').service('Client', ['$http', '$interval', '$timeout
     };
 
     Client.prototype.refreshInstalledApps = function (callback) {
+        callback = callback || function (error) { if (error) console.error(error); };
         var that = this;
 
         this.getApps(function (error, apps) {