diff --git a/lib-ee/emqx_ee_bridge/i18n/emqx_ee_bridge_kafka.conf b/lib-ee/emqx_ee_bridge/i18n/emqx_ee_bridge_kafka.conf
index 076619e91..566d1889e 100644
--- a/lib-ee/emqx_ee_bridge/i18n/emqx_ee_bridge_kafka.conf
+++ b/lib-ee/emqx_ee_bridge/i18n/emqx_ee_bridge_kafka.conf
@@ -61,8 +61,8 @@ emqx_ee_bridge_kafka {
     }
     mqtt_topic {
         desc {
-            en: "MQTT topic or topic as data source (bridge input).  Should not configure this if the bridge is used as a rule action."
-            zh: "桥接指定 MQTT 主题数据，也可以留空由规则动作指定数据源。"
+            en: "MQTT topic or topic filter as data source (bridge input).  If rule action is used as data source, this config should be left empty, otherwise messages will be duplicated in Kafka."
+            zh: "指定源 MQTT 主题，若由规则动作指定数据源，则该配置应留空，否则消息会被重复发送到 Kafka。"
         }
         label {
             en: "Source MQTT Topic"