diff --git a/owrx/connection.py b/owrx/connection.py
index b012f51..c0b7861 100644
--- a/owrx/connection.py
+++ b/owrx/connection.py
@@ -492,17 +492,17 @@ class HandshakeMessageHandler(Handler):
             client = None
             if "type" in handshake:
                 if handshake["type"] == "receiver":
-                    client = OpenWebRxReceiverClient(conn)
+                    client = OpenWebRxReceiverClient
                 elif handshake["type"] == "map":
-                    client = MapConnection(conn)
+                    client = MapConnection
                 else:
                     logger.warning("invalid connection type: %s", handshake["type"])
 
             if client is not None:
-                logger.debug("handshake complete, handing off to %s", type(client).__name__)
+                logger.debug("handshake complete, handing off to %s", client.__name__)
                 # hand off all further communication to the correspondig connection
                 conn.send("CLIENT DE SERVER server=openwebrx version={version}".format(version=openwebrx_version))
-                conn.setMessageHandler(client)
+                conn.setMessageHandler(client(conn))
             else:
                 logger.warning('invalid handshake received')
         else: