diff --git a/Contrib/Modern UI/Readme.html b/Contrib/Modern UI/Readme.html
index 1b989c24..4e09390c 100644
--- a/Contrib/Modern UI/Readme.html
+++ b/Contrib/Modern UI/Readme.html
@@ -338,6 +338,9 @@ RRGGBBR hexadecimal)
Background color for the header, the Welcome page and the Finish
page.
Default: FFFFFF
MUI_HEADER_TRANSPARENT_TEXT
+Set a transparent background for the header's label controls.
+Useful for custom user interfaces that set a bigger header image.