diff --git a/commands/HelloController.php b/commands/HelloController.php
index 7f019cc..20066c4 100644
--- a/commands/HelloController.php
+++ b/commands/HelloController.php
@@ -23,6 +23,7 @@ class HelloController extends Controller
     /**
      * This command echoes what you have entered as the message.
      * @param string $message the message to be echoed.
+     * @return int Exit code
      */
     public function actionIndex($message = 'hello world')
     {