diff --git a/HttpServer/Server.php b/HttpServer/Server.php
index 74959515..693f04a4 100644
--- a/HttpServer/Server.php
+++ b/HttpServer/Server.php
@@ -104,7 +104,6 @@ class Server extends Application
 		if (!$isEnable) {
 			return;
 		}
-		$this->debug('Runtime::enableCoroutine...');
 		Runtime::enableCoroutine(true, SWOOLE_HOOK_TCP |
 			SWOOLE_HOOK_UNIX |
 			SWOOLE_HOOK_UDP |