diff --git a/HttpServer/Route/Node.php b/HttpServer/Route/Node.php
index 50316b3d..e7057131 100644
--- a/HttpServer/Route/Node.php
+++ b/HttpServer/Route/Node.php
@@ -91,7 +91,7 @@ class Node extends Application
 	 * @param $response
 	 * @return mixed|null
 	 */
-	public function afterDispatch($response)
+	public function afterDispatch($response = null)
 	{
 		return Coroutine::create(function ($request, $response) {
 			(Reduce::after($this->_after))($request, $response);
diff --git a/HttpServer/Route/Router.php b/HttpServer/Route/Router.php
index 2f9cf063..bab8d774 100644
--- a/HttpServer/Route/Router.php
+++ b/HttpServer/Route/Router.php
@@ -434,7 +434,7 @@ class Router extends Application implements RouterInterface
 			if (!($node instanceof Node) || !$node->hasAfter()) {
 				return;
 			}
-			$node->afterDispatch($response);
+			$node->afterDispatch($response ?? null);
 		}
 	}