diff --git a/controllers/Categories.php b/controllers/Categories.php
index <HASH>..<HASH> 100644
--- a/controllers/Categories.php
+++ b/controllers/Categories.php
@@ -9,9 +9,9 @@ use RainLab\Blog\Models\Category;
 class Categories extends Controller
 {
     public $implement = [
-        'Backend.Behaviors.FormController',
-        'Backend.Behaviors.ListController',
-        'Backend.Behaviors.ReorderController'
+        \Backend\Behaviors\FormController::class,
+        \Backend\Behaviors\ListController::class,
+        \Backend\Behaviors\ReorderController::class
     ];
 
     public $formConfig = 'config_form.yaml';
diff --git a/controllers/Posts.php b/controllers/Posts.php
index <HASH>..<HASH> 100644
--- a/controllers/Posts.php
+++ b/controllers/Posts.php
@@ -9,9 +9,9 @@ use RainLab\Blog\Models\Post;
 class Posts extends Controller
 {
     public $implement = [
-        'Backend.Behaviors.FormController',
-        'Backend.Behaviors.ListController',
-        'Backend.Behaviors.ImportExportController'
+        \Backend\Behaviors\FormController::class,
+        \Backend\Behaviors\ListController::class,
+        \Backend\Behaviors\ImportExportController::class
     ];
 
     public $formConfig = 'config_form.yaml';
Use class definitions for implemented behaviours (#<I>)