diff --git a/nimble/engine/flows/create_instance.py b/nimble/engine/flows/create_instance.py
index a8be3000..6b23f19b 100644
--- a/nimble/engine/flows/create_instance.py
+++ b/nimble/engine/flows/create_instance.py
@@ -24,6 +24,7 @@ from taskflow.patterns import linear_flow
 
 from nimble.common import exception
 from nimble.common import flow_utils
+from nimble.common.i18n import _
 from nimble.common.i18n import _LE
 from nimble.common.i18n import _LI
 from nimble.common import utils
diff --git a/nimble/engine/manager.py b/nimble/engine/manager.py
index 11a1c1fd..4009067a 100644
--- a/nimble/engine/manager.py
+++ b/nimble/engine/manager.py
@@ -22,6 +22,7 @@ from oslo_service import periodic_task
 
 from nimble.common import exception
 from nimble.common import flow_utils
+from nimble.common.i18n import _
 from nimble.common.i18n import _LE
 from nimble.common.i18n import _LI
 from nimble.conf import CONF