diff --git a/etc/emqx.conf b/etc/emqx.conf
index 99934f3ab..8a2fc1996 100644
--- a/etc/emqx.conf
+++ b/etc/emqx.conf
@@ -820,12 +820,12 @@ zone.internal.mqueue_store_qos0 = true
 ## Value: on | off
 zone.internal.enable_flapping_detect = off
 
-# ## See zone.$name.force_shutdown_policy
-# ##
-# ## Default:
-# ##   - 10000|32MB on ARCH_64 system
-# ##   - 10000|16MB on ARCH_32 sytem
-# zone.internal.force_shutdown_policy = 100000|64MB
+## See zone.$name.force_shutdown_policy
+##
+## Default:
+##   - 10000|32MB on ARCH_64 system
+##   - 10000|16MB on ARCH_32 sytem
+## zone.internal.force_shutdown_policy = 100000|64MB
 
 ## All the topics will be prefixed with the mountpoint path if this option is enabled.
 ##