diff --git a/src/Bundle/ChillDocGeneratorBundle/Controller/DocGeneratorTemplateController.php b/src/Bundle/ChillDocGeneratorBundle/Controller/DocGeneratorTemplateController.php
index 35ea454d2..510d5a483 100644
--- a/src/Bundle/ChillDocGeneratorBundle/Controller/DocGeneratorTemplateController.php
+++ b/src/Bundle/ChillDocGeneratorBundle/Controller/DocGeneratorTemplateController.php
@@ -31,17 +31,17 @@ use ChampsLibres\AsyncUploaderBundle\TempUrl\TempUrlOpenstackGenerator;
 use Jose\Component\Core\JWK;
 use Base64Url\Base64Url;
 
-use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpKernel\KernelInterface;
 
 // TODO à mettre dans services
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\Routing\Annotation\Route;
 
-class DocGeneratorTemplateController extends AbstractController
+final class DocGeneratorTemplateController extends AbstractController
 {
-    protected $kernel;
+    private KernelInterface $kernel;
 
-    public function __construct(HttpKernelInterface $kernel)
+    public function __construct(KernelInterface $kernel)
     {
         $this->kernel = $kernel;
     }