diff --git a/doc/source/building_images.rst b/doc/source/building_images.rst
index 22324dbc9b..0faf5501c7 100644
--- a/doc/source/building_images.rst
+++ b/doc/source/building_images.rst
@@ -6,7 +6,8 @@ Building Images for Supported Types
 .. note::
 
    This document provides an overview how to build and use
-   the {kiwi} supported image types.
+   the {kiwi} supported image types. All images that we provide
+   for testing uses the root password: `linux`
 
 .. toctree::
    :maxdepth: 1