diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index a407bbd..d299017 100644
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -34,7 +34,7 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface
      *
@@ -55,7 +55,7 @@ final class BackendController extends Controller
      *
      * @param RequestAbstract  $request  Request
      * @param ResponseAbstract $response Response
-     * @param mixed            $data     Generic data
+     * @param array            $data     Generic data
      *
      * @return RenderableInterface
      *