diff --git a/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_communicator.py b/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_communicator.py
index 97cf1081dc6a4dcbab1041bb8280d716cca743d4..6e74d744f66e52cbb510bacde7a3879f0d200818 100644
--- a/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_communicator.py
+++ b/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_communicator.py
@@ -13,7 +13,8 @@ from force_bdss.data_sources.data_source_parameters import DataSourceParameters
 
 from force_bdss.mco.parameters.base_mco_parameter_factory import \
     BaseMCOParameterFactory
-from force_bdss.core_plugins.dummy.dummy_dakota.parameters import RangedMCOParameter
+from force_bdss.core_plugins.dummy.dummy_dakota.parameters import \
+    RangedMCOParameter
 
 
 class TestDakotaCommunicator(unittest.TestCase):
diff --git a/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_optimizer.py b/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_optimizer.py
index 40ce8cc44e648a47a970c9f86ee9356d82b1ebb9..b8be17e7f34a1444162c0e2d873f30dcb34ad321 100644
--- a/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_optimizer.py
+++ b/force_bdss/core_plugins/dummy/dummy_dakota/tests/test_dakota_optimizer.py
@@ -1,9 +1,12 @@
 import unittest
 
-from force_bdss.core_plugins.dummy.dummy_dakota.parameters import RangedMCOParameter, \
+from force_bdss.core_plugins.dummy.dummy_dakota.parameters import (
+    RangedMCOParameter,
     RangedMCOParameterFactory
-from force_bdss.core_plugins.dummy.dummy_dakota.dakota_model import \
+)
+from force_bdss.core_plugins.dummy.dummy_dakota.dakota_model import (
     DummyDakotaModel
+)
 from force_bdss.mco.base_mco_bundle import BaseMCOBundle
 
 try: