diff --git a/HttpServer/Shutdown.php b/HttpServer/Shutdown.php
index 1383eef9..3f1dbe52 100644
--- a/HttpServer/Shutdown.php
+++ b/HttpServer/Shutdown.php
@@ -67,6 +67,10 @@ class Shutdown extends Component
     {
         $master_pid = Server()->setting['pid_file'] ?? PID_PATH;
 
+        if (!file_exists($master_pid)) {
+            return false;
+        }
+
         return $this->pidIsExists($master_pid);
     }