diff --git a/pages/06.contribute/10.packaging_apps/60.advanced/20.config_panels/config_panels.md b/pages/06.contribute/10.packaging_apps/60.advanced/20.config_panels/config_panels.md
index 9d02b98a..abf7c619 100644
--- a/pages/06.contribute/10.packaging_apps/60.advanced/20.config_panels/config_panels.md
+++ b/pages/06.contribute/10.packaging_apps/60.advanced/20.config_panels/config_panels.md
@@ -67,6 +67,8 @@ For performance reasons, questions short keys have to be unique in all the `conf
 ```
 In which two questions have "real variable name" `is server_ip` and therefore conflict with each other.
 
+! Short keys should avoid conflicts with settings too (e.g. id, install_time, mysql_pwd, path, domain, port, db_name)
+
 ### Supported questions types and properties
 
 See [the full list of questions types and properties](/dev/forms)