diff --git a/readHomematicIP.py b/readHomematicIP.py
index e094327..7e01bb1 100755
--- a/readHomematicIP.py
+++ b/readHomematicIP.py
@@ -20,6 +20,7 @@ client = paho.Client(protocol=paho.MQTTv31)  # * set a random string (max 23 cha
 client.connect(mqtt_broker, 1883, 60)  # MQTT server address
 
 # Homematic IP
+global config
 config = homematicip.find_and_load_config_file()
 
 home = Home()