diff --git a/apps/emqx_auto_subscribe/etc/emqx_auto_subscribe.conf b/apps/emqx_auto_subscribe/etc/emqx_auto_subscribe.conf
index a12b30fa1..724a52faf 100644
--- a/apps/emqx_auto_subscribe/etc/emqx_auto_subscribe.conf
+++ b/apps/emqx_auto_subscribe/etc/emqx_auto_subscribe.conf
@@ -1,8 +1,8 @@
 
-## When the device log in successfully,
-## The auto-subscribe will complete the subscription for the device
+## When the device logs in successfully,
+## the auto-subscribe will complete the subscription for the device
 ## according to the preset topics list.
-## Placeholders is supported.
+## Placeholders are supported.
 ##
 ## - ${clientid}
 ## - ${username}