diff --git a/Dispatcher/Dispatcher.php b/Dispatcher/Dispatcher.php
index 2a25839d6..db59345c0 100644
--- a/Dispatcher/Dispatcher.php
+++ b/Dispatcher/Dispatcher.php
@@ -170,7 +170,7 @@ class Dispatcher
      * @since  1.0.0
      * @author Dennis Eichhorn <d.eichhorn@oms.com>
      */
-    private function dispatchClosure(\Closure $controller, RequestAbstract $request, ResponseAbstract $response, $data = null)
+    private function dispatchClosure(\Closure $controller, RequestAbstract $request, ResponseAbstract $response, $data = null) : array
     {
         return $controller($this->app, $request, $response, $data);
     }