diff --git a/class/core/cert_api.py b/class/core/cert_api.py
index dbb021fd8..0fa0c3939 100644
--- a/class/core/cert_api.py
+++ b/class/core/cert_api.py
@@ -177,7 +177,7 @@ fi
                 api.writeShell(shell_cron)
 
                 insert_id = mw.M('crontab').add('name,type,where1,where_hour,where_minute,echo,addtime,status,save,backup_to,stype,sname,sbody,urladdress', (
-                    "续签Let's Encrypt证书", 'day', '', '0', '10', echo, time.strftime('%Y-%m-%d %X', time.localtime()), '1', '', 'localhost', 'toShell', '', cmd, ''))
+                    "[勿删]续签Let's Encrypt证书", 'day', '', '0', '10', echo, time.strftime('%Y-%m-%d %X', time.localtime()), '1', '', 'localhost', 'toShell', '', cmd, ''))
 
                 if insert_id > 0:
                     print('创建证书自动续签任务成功!')