diff --git a/apps/emqx/i18n/emqx_schema_i18n.conf b/apps/emqx/i18n/emqx_schema_i18n.conf
index a7d15fbbe..197af9777 100644
--- a/apps/emqx/i18n/emqx_schema_i18n.conf
+++ b/apps/emqx/i18n/emqx_schema_i18n.conf
@@ -17,8 +17,8 @@ emqx_schema {
       zh: "消息队列的最大长度"
     }
     label {
-      en: "Maximum message queue length."
-      zh: "消息队列的最大长度"
+      en: "Maximum mailbox queue length of process."
+      zh: "进程邮箱消息队列的最大长度"
     }
   }
 
@@ -802,7 +802,7 @@ To configure <code>\"topic/1\" > \"topic/2\"</code>:
     mqtt_use_username_as_clientid {
         desc {
             en: """Replace client ID with the username."""
-            zh: """是否使用 Client ID 替换 Username。"""
+            zh: """是否使用 Username 替换 Client ID。"""
         }
     }