diff --git a/application/controllers/AuthenticationController.php b/application/controllers/AuthenticationController.php
index 2d7926819..77925bd8c 100644
--- a/application/controllers/AuthenticationController.php
+++ b/application/controllers/AuthenticationController.php
@@ -8,7 +8,7 @@ use Icinga\Application\Config;
 use Icinga\Application\Icinga;
 use Icinga\Application\Logger;
 use Icinga\Authentication\AuthChain;
-use Icinga\Authentication\Backend\AutoLoginBackend;
+use Icinga\Authentication\Backend\ExternalBackend;
 use Icinga\Exception\AuthenticationException;
 use Icinga\Exception\ConfigurationError;
 use Icinga\Exception\NotReadableError;
@@ -82,7 +82,7 @@ class AuthenticationController extends ActionController
                 }
 
                 foreach ($chain as $backend) {
-                    if ($backend instanceof AutoLoginBackend) {
+                    if ($backend instanceof ExternalBackend) {
                         continue;
                     }
                     ++$backendsTried;
@@ -126,7 +126,7 @@ class AuthenticationController extends ActionController
             } elseif ($request->isGet()) {
                 $user = new User('');
                 foreach ($chain as $backend) {
-                    if ($backend instanceof AutoLoginBackend) {
+                    if ($backend instanceof ExternalBackend) {
                         $authenticated  = $backend->authenticate($user);
                         if ($authenticated === true) {
                             $auth->setAuthenticated($user);