diff --git a/etc/emqx.conf b/etc/emqx.conf
index ccfaa4bb7..2303402d3 100644
--- a/etc/emqx.conf
+++ b/etc/emqx.conf
@@ -1550,7 +1550,6 @@ listener.ssl.external.cacertfile = {{ platform_etc_dir }}/certs/cacert.pem
 ## listener.ssl.external.ocsp_refresh_http_timeout = 15s
 
 ## Whether to enable CRL verification and caching for this listener.
-## If set to true, requires specifying the CRL server URLs.
 ##
 ## Value: boolean
 ## Default: false