bug fixes
diff --git a/plstackapi/core/api/site_privileges.py b/plstackapi/core/api/site_privileges.py
index 73280c6..ac56dd1 100644
--- a/plstackapi/core/api/site_privileges.py
+++ b/plstackapi/core/api/site_privileges.py
@@ -3,7 +3,7 @@
 from plstackapi.openstack.client import OpenStackClient
 from plstackapi.openstack.driver import OpenStackDriver
 from plstackapi.core.api.auth import auth_check
-from plstackapi.core.models import SitePrivilege, Site, Role, User
+from plstackapi.core.models import SitePrivilege
 from plstackapi.core.api.users import _get_users
 from plstackapi.core.api.sites import _get_sites
 from plstackapi.core.api.roles import _get_roles