diff --git a/src/event_handlers/event_handler.py b/src/event_handlers/event_handler.py
index 8db5d64..b7f16cc 100644
--- a/src/event_handlers/event_handler.py
+++ b/src/event_handlers/event_handler.py
@@ -11,7 +11,7 @@ class EventHandler(EventHandlerBase):
         def event_handler_callback(msg_parts):
             anchor, message = msg_parts
             data_json = json.loads(message)
-            response = self.event_handler_function(data_json, self)
+            response = self.event_handler_function(data_json)
             encoded_response = json.dumps(response).encode('utf-8')
             self.zmq_push_socket.send_multipart([anchor, encoded_response])
 
diff --git a/src/event_handlers/event_handler_example.py b/src/event_handlers/event_handler_example.py
index a65fc14..3875054 100644
--- a/src/event_handlers/event_handler_example.py
+++ b/src/event_handlers/event_handler_example.py
@@ -13,17 +13,17 @@ def echo_handler(data):
     return data
 
 
-def rot13_handler(data, *args):
+def rot13_handler(data):
     data['data'] = codecs.encode(data['data'], 'rot13')
     return data
 
 
-def change_case_handler(data, *args):
+def change_case_handler(data):
     data['data'] = data['data'].upper() if data['data'].islower() else data['data'].lower()
     return data
 
 
-def reverse_handler(data, *args):
+def reverse_handler(data):
     data['data'] = data['data'][::-1]
     return data