diff --git a/Docker/src/bin/dbg-msgHub.py b/Docker/src/bin/dbg-msgHub.py
index 95e6246..737b630 100755
--- a/Docker/src/bin/dbg-msgHub.py
+++ b/Docker/src/bin/dbg-msgHub.py
@@ -26,7 +26,7 @@ class Client ( mqtt.Client ):
       self.on_connect = Client.on_connect
       self.on_message = Client.on_message
       
-   def on_connect( self, userData, flags, rc ):
+   def on_connect( self, userdata, flags, reason_code, properties ):
       self.subscribe( '#' )
 
    def on_message( self, userData, msg ):
@@ -62,4 +62,4 @@ client.loop_start()
 while True:
    pass
 
-client.loop_stop( force=True )
+client.loop_stop()