diff --git a/src/app/event_handler_connector.py b/src/app/event_handler_connector.py
index 6c29039..95400bf 100644
--- a/src/app/event_handler_connector.py
+++ b/src/app/event_handler_connector.py
@@ -12,7 +12,7 @@ ioloop.install()
 
 class EventHandlerDownlinkConnector(ZMQConnectorBase):
     def __init__(self, zmq_context=None):
-        super().__init__(zmq_context)
+        super(EventHandlerDownlinkConnector, self).__init__(zmq_context)
         self._zmq_pull_socket = self._zmq_context.socket(zmq.PULL)
         self._zmq_pull_stream = ZMQStream(self._zmq_pull_socket)
         address = 'tcp://*:{}'.format(RECEIVER_PORT)
@@ -22,7 +22,7 @@ class EventHandlerDownlinkConnector(ZMQConnectorBase):
 
 class EventHandlerUplinkConnector(ZMQConnectorBase):
     def __init__(self, zmq_context=None):
-        super().__init__(zmq_context)
+        super(EventHandlerUplinkConnector, self).__init__(zmq_context)
         self._zmq_pub_socket = self._zmq_context.socket(zmq.PUB)
         address = 'tcp://*:{}'.format(PUBLISHER_PORT)
         self._zmq_pub_socket.bind(address)
@@ -31,19 +31,16 @@ class EventHandlerUplinkConnector(ZMQConnectorBase):
 
 class EventHandlerConnector(EventHandlerDownlinkConnector, EventHandlerUplinkConnector):
     def __init__(self, zmq_context=None):
-        self.downlink = EventHandlerDownlinkConnector(zmq_context)
-        self.uplink = EventHandlerUplinkConnector(zmq_context)
-        #EventHandlerDownlinkConnector.__init__(self, zmq_context)  # TODO: solve this with multiple inheritance
-        #EventHandlerUplinkConnector.__init__(self, zmq_context)
+        super(EventHandlerConnector, self).__init__(zmq_context)
 
     def register_callback(self, callback):
-        self.downlink._zmq_pull_stream.on_recv(callback)
+        self._zmq_pull_stream.on_recv(callback)
 
     def send_message(self, message: str, anchor: str = None):
         if not anchor:
             anchor = parse_anchor_from_message(message)
         encoded_message = [part.encode('utf-8') for part in (anchor, message)]
-        self.uplink._zmq_pub_socket.send_multipart(encoded_message)
+        self._zmq_pub_socket.send_multipart(encoded_message)
 
 
 ehc = EventHandlerConnector()