How to show ads only on a custom post type and not on post / pages.

I love that I can select which custom post types to display ads BUT I would like to be able to NOT select standard posts - is this possible?

e.g. - I have a "videos" custom post type and I would like to run a specific in post ad only on video posts, but the way it seems to work is that standard posts are always included in addition to the selected custom post types.

Am I missing something?

It would be nice to see ALL post types listed with a check box for the ones to display, including posts and pages.