diff --git a/tools/src/main/python/one-way-ssl-mqtt-client.py b/tools/src/main/python/one-way-ssl-mqtt-client.py
index 9266fbfc0b..f4e7e1d3d6 100644
--- a/tools/src/main/python/one-way-ssl-mqtt-client.py
+++ b/tools/src/main/python/one-way-ssl-mqtt-client.py
@@ -19,7 +19,7 @@ import paho.mqtt.client as mqtt
 import ssl, socket
 
 # The callback for when the client receives a CONNACK response from the server.
-def on_connect(client, userdata, rc):
+def on_connect(client, userdata, rc, *extra_params):
    print('Connected with result code '+str(rc))
    # Subscribing in on_connect() means that if we lose the connection and
    # reconnect then subscriptions will be renewed.
diff --git a/tools/src/main/python/simple-mqtt-client.py b/tools/src/main/python/simple-mqtt-client.py
index 5f511f4a4c..8b21df6cfc 100644
--- a/tools/src/main/python/simple-mqtt-client.py
+++ b/tools/src/main/python/simple-mqtt-client.py
@@ -18,8 +18,9 @@
 import paho.mqtt.client as mqtt
 
 # The callback for when the client receives a CONNACK response from the server.
-def on_connect(client, userdata, rc):
+def on_connect(client, userdata, rc, *extra_params):
    print('Connected with result code '+str(rc))
+   #print('***' + str(r))
    # Subscribing in on_connect() means that if we lose the connection and
    # reconnect then subscriptions will be renewed.
    client.subscribe('v1/devices/me/attributes')
diff --git a/tools/src/main/python/two-way-ssl-mqtt-client.py b/tools/src/main/python/two-way-ssl-mqtt-client.py
index d3b32423e1..169c0e592a 100644
--- a/tools/src/main/python/two-way-ssl-mqtt-client.py
+++ b/tools/src/main/python/two-way-ssl-mqtt-client.py
@@ -19,7 +19,7 @@ import paho.mqtt.client as mqtt
 import ssl, socket
 
 # The callback for when the client receives a CONNACK response from the server.
-def on_connect(client, userdata, rc):
+def on_connect(client, userdata, rc, *extra_params):
    print('Connected with result code '+str(rc))
    # Subscribing in on_connect() means that if we lose the connection and
    # reconnect then subscriptions will be renewed.