diff --git a/python/adapters/brcm_openomci_onu/omci/brcm_mcast_task.py b/python/adapters/brcm_openomci_onu/omci/brcm_mcast_task.py
index 1615587..55466b1 100644
--- a/python/adapters/brcm_openomci_onu/omci/brcm_mcast_task.py
+++ b/python/adapters/brcm_openomci_onu/omci/brcm_mcast_task.py
@@ -46,6 +46,8 @@
         self._device = omci_agent.get_device ( device_id )
         self._results = None
         self._local_deferred = None
+        self._uni_port = handler.uni_ports[uni_id]
+        assert self._uni_port.uni_id == uni_id
         #mcast entities IDs
         self._mcast_operation_profile_id = handler.pon_port.mac_bridge_port_ani_entity_id + tp_id
         self._mcast_sub_conf_info_id = self._mcast_operation_profile_id + tp_id