diff --git a/tricircle/common/request_source.py b/tricircle/common/request_source.py
index 8c19e65b..ef380f78 100644
--- a/tricircle/common/request_source.py
+++ b/tricircle/common/request_source.py
@@ -10,9 +10,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from neutron_lib import constants as cons
 from oslo_log import log as logging
 from oslo_middleware import base
+from tricircle.common import constants as cons
 import webob
 
 LOG = logging.getLogger(__name__)