diff --git a/start.php b/start.php
index 0401366..9d86590 100755
--- a/start.php
+++ b/start.php
@@ -67,7 +67,7 @@
     Worker::$statusFile = $config['status_file'] ?? '';
 }
 if (property_exists(Worker::class, 'stopTimeout')) {
-    Worker::$stopTimeout = $config['stop_timeout'] ?? '';
+    Worker::$stopTimeout = $config['stop_timeout'] ?? 2;
 }
 
 if ($config['listen']) {