diff --git a/app/models/person.rb b/app/models/person.rb
index 9aa17da..bc14a69 100644
--- a/app/models/person.rb
+++ b/app/models/person.rb
@@ -47,7 +47,7 @@ class Person < Profile
   end
 
    def memberships_by_role(role)
-     Profile.memberships_of(self).all(:conditions => ['role_assignments.role_id = ?', role.id])
+     memberships.where('role_assignments.role_id = ?', role.id)
    end
 
   has_many :friendships, :dependent => :destroy
--
libgit2 0.21.2