diff --git a/force_bdss/api.py b/force_bdss/api.py
index 68364b6fe39edb4b8ff609b45822998a676a6010..418766a2a8d93d83a2e3ce724e1a4268803e6c2f 100644
--- a/force_bdss/api.py
+++ b/force_bdss/api.py
@@ -19,3 +19,6 @@ from .mco.base_mco_communicator import BaseMCOCommunicator  # noqa
 from .mco.base_mco import BaseMCO  # noqa
 from .mco.base_mco_bundle import BaseMCOBundle  # noqa
 from .mco.i_mco_bundle import IMCOBundle  # noqa
+
+from .mco.parameters.base_mco_parameter_factory import BaseMCOParameterFactory  # noqa
+from .mco.parameters.base_mco_parameter import BaseMCOParameter  # noqa