diff --git a/css-scrollbars-1/Overview.bs b/css-scrollbars-1/Overview.bs
index 0c709718cb8..963e1234822 100644
--- a/css-scrollbars-1/Overview.bs
+++ b/css-scrollbars-1/Overview.bs
@@ -113,7 +113,7 @@ which is generally fixed regardless of the scrolling position.
Thumb refers to the moving part of the scrollbar,
which usually floats on top of the track.
-If this property computes to value other than ''auto'',
+If this property computes to value other than ''scrollbar-color/auto'',
implementations may render a simpler scrollbar than the default platform UI rendering,
and color it accordingly.
@@ -171,13 +171,13 @@ This property allows the author to set the maximum thickness of an element’s s
implementations must use the default platform scrollbar width.
thin
-Implementations should use thinner scrollbars than auto when applicable.
+Implementations should use thinner scrollbars than ''scrollbar-width/auto'' when applicable.
This may mean a thin variant of scrollbar provided by the platform,
or a custom scrollbar thinner than the default platform scrollbar.
Note: Some platforms may only have a tiny scrollbar by default
which cannot be or makes no sense to make thinner.
-In that case, implementations may treat this value as auto.
+In that case, implementations may treat this value as ''scrollbar-width/auto''.
none
implementations must not display any scrollbar, however the element's scrollability is not affected.