diff --git a/rel/config/examples/conn_congestion.conf.example b/rel/config/examples/conn_congestion.conf.example
index 66a47a65f..785ee5ab5 100644
--- a/rel/config/examples/conn_congestion.conf.example
+++ b/rel/config/examples/conn_congestion.conf.example
@@ -1,6 +1,6 @@
 ## Connection Congestion
 ##
-## Generating alarm when MQTT connection congested
+## Emit alarms when MQTT connection congested
 
 conn_congestion {
     ## Enable or disable connection congestion alarm
diff --git a/rel/config/examples/prometheus.conf.example b/rel/config/examples/prometheus.conf.example
index face3fc1f..3b186e93f 100644
--- a/rel/config/examples/prometheus.conf.example
+++ b/rel/config/examples/prometheus.conf.example
@@ -1,4 +1,4 @@
-## Prometheus push-gateway integration
+## Prometheus
 
 ## EMQX's Prometheus scraping endpoint is enabled by default without authentication.
 ## And there is no way to turn it off.