diff --git a/HttpServer/Events/OnWorkerStart.php b/HttpServer/Events/OnWorkerStart.php
index 6d33d6c5..7843a4ec 100644
--- a/HttpServer/Events/OnWorkerStart.php
+++ b/HttpServer/Events/OnWorkerStart.php
@@ -35,8 +35,6 @@ class OnWorkerStart extends Callback
         Coroutine::set(['enable_deadlock_check' => false]);
         Snowflake::app()->stateInit();
 
-        $this->isPrint = false;
-
         $this->debug(sprintf('System#%d start.', $worker_id));
         if ($worker_id >= $server->setting['worker_num']) {
             $this->onTask($server, $worker_id);