diff --git a/HttpServer/Events/OnClose.php b/HttpServer/Events/OnClose.php
index c2d32f98..22e65d5a 100644
--- a/HttpServer/Events/OnClose.php
+++ b/HttpServer/Events/OnClose.php
@@ -67,7 +67,7 @@ class OnClose extends Callback
 	 */
 	private function name($server_port): string
 	{
-		return 'listen ' . $server_port . ' ' . Event::SERVER_CLOSE;
+		return 'listen ' . $server_port . ' ' . Event::SERVER_CLIENT_CLOSE;
 	}
 
 
diff --git a/System/Event.php b/System/Event.php
index 35074f2c..3a841a53 100644
--- a/System/Event.php
+++ b/System/Event.php
@@ -57,6 +57,7 @@ class Event extends BaseObject
     const SERVER_HANDSHAKE = 'on handshake';
     const SERVER_MESSAGE = 'on message';
     const SERVER_CLOSE = 'on close';
+    const SERVER_CLIENT_CLOSE = 'SERVER:CLIENT:CLOSE';
 
 
     /**