diff --git a/extensions/guacamole-auth-cas/src/main/resources/cas.css b/extensions/guacamole-auth-cas/src/main/resources/cas.css
deleted file mode 100644
index dc8357755..000000000
--- a/extensions/guacamole-auth-cas/src/main/resources/cas.css
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-/* Hide login dialog */
-.login-ui div.login-dialog {
-    display: none;
-}
diff --git a/extensions/guacamole-auth-cas/src/main/resources/casConfig.js b/extensions/guacamole-auth-cas/src/main/resources/casConfig.js
index 77b0cbb10..630a9d2db 100644
--- a/extensions/guacamole-auth-cas/src/main/resources/casConfig.js
+++ b/extensions/guacamole-auth-cas/src/main/resources/casConfig.js
@@ -36,16 +36,17 @@ angular.module('guacCAS').config(['formServiceProvider',
  * Config block which augments the existing routing, providing special handling
  * for the "ticket=" fragments provided by OpenID Connect.
  */
-angular.module('index').config(['$routeProvider',
-        function indexRouteConfig($routeProvider) {
+angular.module('index').config(['$routeProvider','$windowProvider',
+        function indexRouteConfig($routeProvider,$windowProvider) {
 
-    var curPath = window.location.href;
+    var $window = $windowProvider.$get();
+    var curPath = $window.location.href;
     var ticketPos = curPath.indexOf("?ticket=") + 8;
     var hashPos = curPath.indexOf("#/");
     if (ticketPos > 0 && ticketPos < hashPos) {
         var ticket = curPath.substring(ticketPos, hashPos);
         var newPath = curPath.substring(0,ticketPos - 8) + '#/?ticket=' + ticket;
-        window.location = newPath;
+        $window.location.href = newPath;
     }
 
 }]);
diff --git a/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json b/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
index 5bfb5f70b..2561a3262 100644
--- a/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
+++ b/extensions/guacamole-auth-cas/src/main/resources/guac-manifest.json
@@ -13,10 +13,6 @@
         "casModule.js",
         "casController.js",
         "casConfig.js"
-    ],
-
-    "css" : [
-        "cas.css"
     ]
 
 }