diff --git a/src/Extension/MessageExtension.php b/src/Extension/MessageExtension.php
index c97ff38f..5274fcd5 100644
--- a/src/Extension/MessageExtension.php
+++ b/src/Extension/MessageExtension.php
@@ -90,6 +90,7 @@ private function initBaseExtensions()
      * 执行拓展.
      *
      * @param $collection
+     *
      * @return bool
      */
     public function exec($collection)