diff --git a/src/Controller/BlogController.php b/src/Controller/BlogController.php
index 6263a5f8a..e171423b5 100644
--- a/src/Controller/BlogController.php
+++ b/src/Controller/BlogController.php
@@ -13,6 +13,7 @@
 
 use App\Entity\Comment;
 use App\Entity\Post;
+use App\Entity\Tag;
 use App\Entity\User;
 use App\Event\CommentCreatedEvent;
 use App\Form\CommentType;
@@ -51,7 +52,7 @@ final class BlogController extends AbstractController
     #[Cache(smaxage: 10)]
     public function index(Request $request, int $page, string $_format, PostRepository $posts, TagRepository $tags): Response
     {
-        $tag = null;
+        $tag = new Tag('');
 
         if ($request->query->has('tag')) {
             $tag = $tags->findOneBy(['name' => $request->query->get('tag')]);