diff --git a/app/function.py b/app/function.py
index 17a13d39..5c43e919 100755
--- a/app/function.py
+++ b/app/function.py
@@ -15,7 +15,6 @@ def connect_mqtt():
         client = mqtt_client.Client(main.client_id)
         if main.username != "" and main.password != "":
             client.username_pw_set(main.username, main.password)
-        client.on_connect = on_connect
         client.connect(main.broker, main.port)
         log("Connected to MQTT Broker!")
         return client