diff --git a/adaptercoreont/openonu.go b/adaptercoreont/openonu.go
index c8b7d4d..20ba5c5 100644
--- a/adaptercoreont/openonu.go
+++ b/adaptercoreont/openonu.go
@@ -291,5 +291,13 @@
 	return errors.New("unImplemented")
 }
 
+func (oo *OpenONUAC) Child_device_lost(deviceID string, pPortNo uint32, onuID uint32) error {
+	return errors.New("unImplemented")
+}
+
+func (oo *OpenONUAC) Start_omci_test(device *voltha.Device, request *voltha.OmciTestRequest) (*voltha.TestResponse, error) {
+	return nil, errors.New("unImplemented")
+}
+
 // Adapter interface required methods ################ end #########
 // #################################################################