diff --git a/conf/app.conf.example b/conf/app.conf.example
index b7ce3b31..4db80aa2 100644
--- a/conf/app.conf.example
+++ b/conf/app.conf.example
@@ -230,6 +230,7 @@ dingtalk_qr_key="${MINDOC_DINGTALK_QRKEY}"
 # 钉钉扫码登录Secret
 dingtalk_qr_secret="${MINDOC_DINGTALK_QRSECRET}"
 
-
+# i18n config
+default_lang="zh-cn"