diff --git a/force_bdss/mco/base_mco.py b/force_bdss/mco/base_mco.py
index 21d91bf393e18f0bb3eb5b9f92ed77d887ce84a0..1edb2c56f89bca6943e3dc131d78c7de0f243e43 100644
--- a/force_bdss/mco/base_mco.py
+++ b/force_bdss/mco/base_mco.py
@@ -1,6 +1,6 @@
 import abc
 
-from traits.api import ABCHasStrictTraits, Instance, Event, Dict
+from traits.api import ABCHasStrictTraits, Instance, Event
 
 from force_bdss.mco.events import BaseMCOEvent
 from .i_mco_factory import IMCOFactory
diff --git a/force_bdss/mco/events.py b/force_bdss/mco/events.py
index 19a881b05ddf21086315234758b91613857c4c3f..2800b8b3387d651600c8c6c8d20247410438f585 100644
--- a/force_bdss/mco/events.py
+++ b/force_bdss/mco/events.py
@@ -16,4 +16,3 @@ class MCOFinishEvent(BaseMCOEvent):
 class MCOProgressEvent(BaseMCOEvent):
     input = Tuple()
     output = Tuple()
-