diff --git a/apps/emqx/i18n/emqx_schema_i18n.conf b/apps/emqx/i18n/emqx_schema_i18n.conf
index ae9da4579..81e9c96dc 100644
--- a/apps/emqx/i18n/emqx_schema_i18n.conf
+++ b/apps/emqx/i18n/emqx_schema_i18n.conf
@@ -869,7 +869,7 @@ When set to true, invalid utf8 strings in for example client ID, topic name, etc
 
     mqtt_max_awaiting_rel {
         desc {
-            en: """EMQX creates a wait queue in the client's session to accept QoS 2 messages from the client until this QoS 2 message transmission is complete or is discarded due to timeout.</br>
+            en: """For each publisher session, the maximum number of outstanding QoS 2 messages pending on the client to send PUBREL. After reaching this limit, new QoS 2 PUBLISH requests will be rejected with reason code `147(0x93)` until either PUBREL is received or timed out.</br>
 After this queue is full, the processing of QoS 2 messages will be stopped."""
             zh: """EMQX 会在客户端的会话中创建一个等待队列来接受客户端的 QoS 2 消息，直到这条 QoS 2 消息传输完成或由于超时被丢弃。</br>
 该队列满后会停止处理 QoS 2 消息。"""