How to hide content in widgets with Membership?

I´m using the Memberhip plugin to hide content after the more tag for non-registered users. It works fine with one exception. On my frontpage I have a “site wide content-widget” that shows recent articles. The thing is, it shows the hidden content too, even if a user is not logged in/registered.

Is there some way to fix this issue, or do I have to write some 50 words prior to the more tag, thus filling the excerpt with free, open content?