diff --git a/modules/backend/controllers/Users.php b/modules/backend/controllers/Users.php
index 9c7cdd0c2..5db153b3d 100644
--- a/modules/backend/controllers/Users.php
+++ b/modules/backend/controllers/Users.php
@@ -84,9 +84,9 @@ class Users extends Controller
     /**
      * Add available permission fields to the User form.
      */
-    protected function formExtendFields($host)
+    protected function formExtendFields($form)
     {
-        if ($host->getContext() == 'myaccount')
+        if ($form->getContext() == 'myaccount')
             return;
 
         $permissionFields = [];
@@ -116,6 +116,6 @@ class Users extends Controller
             $permissionFields[$fieldName] = $fieldConfig;
         }
 
-        $host->addTabFields($permissionFields);
+        $form->addTabFields($permissionFields);
     }
 }
\ No newline at end of file
diff --git a/modules/backend/models/User.php b/modules/backend/models/User.php
index e4fa9c687..30af0514f 100644
--- a/modules/backend/models/User.php
+++ b/modules/backend/models/User.php
@@ -43,7 +43,10 @@ class User extends UserBase
      */
     protected $purgeable = ['password_confirmation', 'send_invite'];
 
-    protected static $loginAttribute = 'login';
+    /**
+     * @var string Login attribute
+     */
+    public static $loginAttribute = 'login';
 
     /**
      * @return string Returns the user's full name.