Supporter Link in Sub-blog Dashboards

If user A is has got subblog.mainblog.com in his My Sites list, that is, he's a member of a sub-blog (but he is not the admin, and in roles terms he's just a subscriber) he has a link in the dashboard of the sub-blog that says "Supporter", and the link is 404

http://subblog.mainblog.com/wp-admin/href=