diff --git a/python/adapters/ponsim_olt/ponsim_olt.py b/python/adapters/ponsim_olt/ponsim_olt.py
index 95d6590..e3157e7 100644
--- a/python/adapters/ponsim_olt/ponsim_olt.py
+++ b/python/adapters/ponsim_olt/ponsim_olt.py
@@ -41,7 +41,7 @@
 from python.protos import ponsim_pb2
 from python.protos import third_party
 from python.protos.common_pb2 import OperStatus, ConnectStatus
-from python.protos.core_adapter_pb2 import SwitchCapability, PortCapability, \
+from python.protos.inter_container_pb2 import SwitchCapability, PortCapability, \
     InterAdapterMessageType, InterAdapterResponseBody
 from python.protos.device_pb2 import Port, PmConfig, PmConfigs
 from python.protos.events_pb2 import KpiEvent, KpiEventType, MetricValuePairs