diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index 6e0333c..3c165d2 100755
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -52,7 +52,7 @@ final class BackendController extends Controller
     public function setupStyles(RequestAbstract $request, ResponseAbstract $response, mixed $data = null) : void
     {
         /** @var \phpOMS\Model\Html\Head $head */
-        $head = $response->get('Content')->head;
+        $head = $response->data['Content']->head;
         $head->addAsset(AssetType::CSS, '/Modules/Kanban/Theme/Backend/css/styles.css?v=1.0.0');
     }