diff --git a/cluster_upgrade/tests/test_validators.py b/cluster_upgrade/tests/test_validators.py
index 950ef21..8af57c1 100644
--- a/cluster_upgrade/tests/test_validators.py
+++ b/cluster_upgrade/tests/test_validators.py
@@ -19,7 +19,7 @@ import mock
 from oslo_serialization import jsonutils
 
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun.settings import settings
 from nailgun.test import base
 
diff --git a/cluster_upgrade/validators.py b/cluster_upgrade/validators.py
index 3874147..0dcd286 100644
--- a/cluster_upgrade/validators.py
+++ b/cluster_upgrade/validators.py
@@ -17,7 +17,7 @@
 from nailgun.api.v1.validators import assignment
 from nailgun.api.v1.validators import base
 from nailgun import consts
-from nailgun.errors import errors
+from nailgun import errors
 from nailgun import objects
 
 from .objects import adapters