diff --git a/guacamole/src/main/frontend/src/app/index/controllers/indexController.js b/guacamole/src/main/frontend/src/app/index/controllers/indexController.js
index 722b27bd8..7fc18d061 100644
--- a/guacamole/src/main/frontend/src/app/index/controllers/indexController.js
+++ b/guacamole/src/main/frontend/src/app/index/controllers/indexController.js
@@ -228,6 +228,22 @@ angular.module('index').controller('indexController', ['$scope', '$injector',
 
     }, true);
 
+    /**
+     * Sets the current overall state of the client side of the
+     * application to the given value. Possible values are defined by
+     * {@link ApplicationState}. The title and class associated with the
+     * current page are automatically reset to the standard values applicable
+     * to the application as a whole (rather than any specific page).
+     *
+     * @param {!string} state
+     *     The state to assign, as defined by {@link ApplicationState}.
+     */
+    const setApplicationState = function setApplicationState(state) {
+        $scope.applicationState = state;
+        $scope.page.title = 'APP.NAME';
+        $scope.page.bodyClassName = '';
+    };
+
     /**
      * Navigates the user back to the root of the application (or reloads the
      * current route and controller if the user is already there), effectively
@@ -250,9 +266,7 @@ angular.module('index').controller('indexController', ['$scope', '$injector',
     // Display login screen if a whole new set of credentials is needed
     $scope.$on('guacInvalidCredentials', function loginInvalid(event, parameters, error) {
 
-        $scope.applicationState = ApplicationState.AWAITING_CREDENTIALS;
-        $scope.page.title = 'APP.NAME';
-        $scope.page.bodyClassName = '';
+        setApplicationState(ApplicationState.AWAITING_CREDENTIALS);
 
         $scope.loginHelpText = null;
         $scope.acceptedCredentials = {};
@@ -263,9 +277,7 @@ angular.module('index').controller('indexController', ['$scope', '$injector',
     // Prompt for remaining credentials if provided credentials were not enough
     $scope.$on('guacInsufficientCredentials', function loginInsufficient(event, parameters, error) {
 
-        $scope.applicationState = ApplicationState.AWAITING_CREDENTIALS;
-        $scope.page.title = 'APP.NAME';
-        $scope.page.bodyClassName = '';
+        setApplicationState(ApplicationState.AWAITING_CREDENTIALS);
 
         $scope.loginHelpText = error.translatableMessage;
         $scope.acceptedCredentials = parameters;
@@ -283,10 +295,7 @@ angular.module('index').controller('indexController', ['$scope', '$injector',
                 || error.type === Error.Type.INVALID_CREDENTIALS)
             return;
 
-        $scope.applicationState = ApplicationState.AUTOMATIC_LOGIN_REJECTED;
-        $scope.page.title = 'APP.NAME';
-        $scope.page.bodyClassName = '';
-
+        setApplicationState(ApplicationState.AUTOMATIC_LOGIN_REJECTED);
         $scope.reAuthenticating = false;
         $scope.fatalError = error;
 
@@ -295,13 +304,8 @@ angular.module('index').controller('indexController', ['$scope', '$injector',
     // Replace absolutely all content with an error message if the page itself
     // cannot be displayed due to an error
     $scope.$on('guacFatalPageError', function fatalPageError(error) {
-
-        $scope.applicationState = ApplicationState.FATAL_ERROR;
-        $scope.page.title = 'APP.NAME';
-        $scope.page.bodyClassName = '';
-
+        setApplicationState(ApplicationState.FATAL_ERROR);
         $scope.fatalError = error;
-
     });
 
     // Replace the overall user interface with an informational message if the