diff --git a/Docker/src/python/tHome/broker/connect.py b/Docker/src/python/tHome/broker/connect.py
index 92c6efb..f4a5f98 100644
--- a/Docker/src/python/tHome/broker/connect.py
+++ b/Docker/src/python/tHome/broker/connect.py
@@ -7,7 +7,7 @@ from . import config
 import paho.mqtt.client as mqtt
 
 #===========================================================================
-class Client(  mqtt.Client(mqtt.CallbackAPIVersion.VERSION2) ):
+class Client(  mqtt.Client(mqtt.CallbackAPIVersion.VERSION1) ):
    """Logging client
    """
    def __init__( self, log=None ):