diff --git a/docs/Configuration/configuration.md b/docs/Configuration/configuration.md
index 59f9a15d..f841cdf4 100644
--- a/docs/Configuration/configuration.md
+++ b/docs/Configuration/configuration.md
@@ -53,6 +53,8 @@ group:
 
 **The outdoor temperature threshold** This is an optional field. If you have an outdoor sensor or a weather entity, you can set a threshold. If the outdoor temperature is higher than the threshold, the thermostat will be turned off. If the outdoor temperature is lower than the threshold, the thermostat will be turned on. If you don't have an outdoor sensor or a weather entity, this field will be ignored.
 
+**Tolerance** This is an optional field. It helps prevent the thermostat from turning on an off too often. Here is an example how it works: If you set the target temperature to 20.0 and the tolerance to 0.3 for example. Then BT will heat to 20.0 and then go to idle until the temperature drops again to 19.7 and then it will heat again to 20.0.
+
 ## Second step
 
 ![second step](../../assets/config_2.png)