diff --git a/configuration.md b/configuration.md
index e83181ec7..5bbf0f3a8 100644
--- a/configuration.md
+++ b/configuration.md
@@ -51,9 +51,11 @@ If you want to redirect everything to HTTPS, you can modify the configuration li
 ```
 # If set to true, all HTTP traffic will be redirected to the first HTTPs configuration.
 
-redirectToHttps: true
+  redirectToHttps: true
 ```
 
+This should be written just before the `mount` option, inside the `http:` block.
+
 ### Link to XO-web
 
 You shouldn't have to change this. It's the path were "xo-web" files are served by "xo-server.