diff --git a/scripts/README.md b/scripts/README.md
index acfebfd..c8640af 100644
--- a/scripts/README.md
+++ b/scripts/README.md
@@ -311,7 +311,8 @@ but with a .txt extension.
 All the configuration options can be given in a configuration file as
 well as environment variables.
 
-Environment variables take precedence over the configuration file.
+<!-- XXX this is not true at the moment, not sure if this is a bug or a feature...
+Environment variables take precedence over the configuration file. -->
 
 The default `make-images.cfg` would look something like:
 ```shell