edit profile.php

WordPress multisite v 3.4.1

Re the toolbar in the top right hand corner that lets a user edit his profile. If a subscriber is a member of several sites it asks him which site he wants to edit. I want subscribers of blog(1) to be directed to their blog one profiles only. How do I do this? (without affecting other roles).

Thanks

http://i49.tinypic.com/15yajb7.jpg