diff --git a/Docker/src/conf/broker.py b/Docker/src/conf/broker.py
index 49b8d7d..d6c2b7c 100644
--- a/Docker/src/conf/broker.py
+++ b/Docker/src/conf/broker.py
@@ -6,7 +6,7 @@ import os
 #
 #===========================================================================
 host = os.getenv('MQTT_BROKER_IP', '192.168.1.20')
-port = os.getenv('MQTT_BROKER_PORT', 31333)
+port = os.getenv('MQTT_BROKER_PORT', 1883)
 
 # Keep alive time in seconds.  Client sends a ping if no other message
 # is sent in this interval.