diff --git a/force_bdss/mco/parameters/base_mco_parameter_factory.py b/force_bdss/mco/parameters/base_mco_parameter_factory.py
index 7dfb632296d7581ef13f17fbfa9c52987723c122..03598138df2b680a0557a55727eae4acb67994e2 100644
--- a/force_bdss/mco/parameters/base_mco_parameter_factory.py
+++ b/force_bdss/mco/parameters/base_mco_parameter_factory.py
@@ -1,4 +1,4 @@
-from traits.api import Type, Instance, provides, Unicode
+from traits.api import Type, Instance, provides
 
 from force_bdss.core.base_factory import BaseFactory
 from force_bdss.ids import mco_parameter_id