diff --git a/Readme.md b/Readme.md
index 11d03bc..cddda83 100644
--- a/Readme.md
+++ b/Readme.md
@@ -13,7 +13,7 @@ all this topics will get a empty payload if the door is closed.
 ## configuration
 
 The script is configured env vars:
-
+```
 MQTT_HOST: the mqtt host to connect to
 ENERGY_METER_TOPIC: the mqtt topic to get the energy meter value
 DOOR_TOPIC: the mqtt topic to get the door status
@@ -23,3 +23,4 @@ OUTPUT_TOPIC_PREFIX: the mqtt topic to publish the outputs to
 optionally: 
 MQTT_USER: the user to connect with
 MQTT_PASSWORD: the password to connect with
+```