diff --git a/apps/permissions/managers.py b/apps/permissions/managers.py
index 2284f55e01..b009bc7a2f 100644
--- a/apps/permissions/managers.py
+++ b/apps/permissions/managers.py
@@ -18,7 +18,7 @@ class RoleMemberManager(models.Manager):
     def get_roles_for_member(self, member_obj):
         member_obj = AnonymousUserSingleton.objects.passthru_check(member_obj)
         member_type = ContentType.objects.get_for_model(member_obj)
-        return [role_member.role for role_member in self.model.objects.filter(member_type=member_type, member_id=member_obj.pk)]
+        return (role_member.role for role_member in self.model.objects.filter(member_type=member_type, member_id=member_obj.pk))
 
 
 class StoredPermissionManager(models.Manager):