diff --git a/priv/emqttd.schema b/priv/emqttd.schema
index 2a61cd4a0..77d8aab62 100644
--- a/priv/emqttd.schema
+++ b/priv/emqttd.schema
@@ -357,15 +357,11 @@ end}.
 %% MQTT Broker
 %%--------------------------------------------------------------------
 
-{mapping, "mqtt.broker.sys_interval", "emqttd.broker", [
+{mapping, "mqtt.broker.sys_interval", "emqttd.broker_sys_interval", [
   {default, 60},
   {datatype, integer}
 ]}.
 
-{translation, "emqttd.broker", fun(Conf) ->
-  [{sys_interval, cuttlefish:conf_get("mqtt.broker.sys_interval", Conf)}]
-end}.
-
 %%--------------------------------------------------------------------
 %% MQTT PubSub
 %%--------------------------------------------------------------------