diff --git a/neutron/tests/unit/tests/common/test_net_helpers.py b/neutron/tests/unit/tests/common/test_net_helpers.py
index a67ec22bf59..4e07db21811 100644
--- a/neutron/tests/unit/tests/common/test_net_helpers.py
+++ b/neutron/tests/unit/tests/common/test_net_helpers.py
@@ -14,7 +14,8 @@
 
 import mock
 
-from neutron.common import constants as n_const
+from neutron_lib import constants as n_const
+
 from neutron.tests import base
 from neutron.tests.common import net_helpers