diff --git a/src/CronardMiddleware.php b/src/CronardMiddleware.php
index 0e535c7..46b32e7 100644
--- a/src/CronardMiddleware.php
+++ b/src/CronardMiddleware.php
@@ -24,7 +24,8 @@ class CronardMiddleware implements MiddlewareInterface
 
     public ? TaskFetcher $taskFetcher;
 
-    public function __construct(ContainerInterface $container, string $cronKey, $responseInterface, $variables = []) {
+    public function __construct(ContainerInterface $container, string $cronKey = "", $responseInterface = null, $variables = []) {
+
         $this->cronKey = $cronKey;
         $this->response = $responseInterface;
         $this->variables = $variables;