diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index 8b101a91ed..17657ea1ce 100644
--- a/custom/conf/app.example.ini
+++ b/custom/conf/app.example.ini
@@ -2491,6 +2491,7 @@ ROUTER = console
 ; [actions]
 ;; Enable/Disable actions capabilities
 ;ENABLED = false
+;; Default address to get action plugins, e.g. the default value means downloading from "https://gitea.com/actions/checkout" for "uses: actions/checkout@v3"
 ;DEFAULT_ACTIONS_URL = https://gitea.com
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;