diff --git a/python/adapters/ponsim_onu/main.py b/python/adapters/ponsim_onu/main.py
index c4c12db..79320c2 100755
--- a/python/adapters/ponsim_onu/main.py
+++ b/python/adapters/ponsim_onu/main.py
@@ -358,7 +358,7 @@
 
             self.core_proxy = CoreProxy(
                 kafka_proxy=None,
-                core_topic=self.core_topic,
+                default_core_topic=self.core_topic,
                 my_listening_topic=self.listening_topic)
 
             self.adapter_proxy = AdapterProxy(
@@ -370,7 +370,7 @@
                 core_proxy=self.core_proxy, adapter_proxy=self.adapter_proxy,
                 config=config)
             ponsim_request_handler = AdapterRequestFacade(
-                adapter=self.adapter)
+                adapter=self.adapter, core_proxy=self.core_proxy)
 
             yield registry.register(
                 'kafka_adapter_proxy',