diff --git a/docs/documentation/sitespeed.io/configuration/index.md b/docs/documentation/sitespeed.io/configuration/index.md
index d987baa7f..2b541165e 100644
--- a/docs/documentation/sitespeed.io/configuration/index.md
+++ b/docs/documentation/sitespeed.io/configuration/index.md
@@ -311,6 +311,8 @@ If you wanna override and run the same configuration but using Firefox, you just
 $ sitespeed.io --config config.json -b firefox https://www.sitespeed.io
 ~~~
 
+CLI will always override your JSON config.
+
 ## Advanced
 
 ### Slack