"Enrol me in this course" link should be hidden for non-enrolable courses

If a course is set to not allow self enrollments, but allow guest access, a guest user still sees the "Enrol me in this course" link in the Setting block, under Course Administration. If they click the link, they are greeted with a very disappointing "This course is not enrollable at this time" message. Instead that useless link should not show up. Screenshots are attached.