diff --git a/documentation/en/over-climate.md b/documentation/en/over-climate.md
index 0f0c112..b019d2b 100644
--- a/documentation/en/over-climate.md
+++ b/documentation/en/over-climate.md
@@ -60,6 +60,8 @@ Of course, your underlying equipment must have ventilation, and it must be contr
 
 ### Compensating for the Internal Temperature of the Underlying Equipment
 
+Warning: This option must not be used with direct valve control regulation if a calibration entity has been provided.
+
 Sometimes, the internal thermometer of the underlying equipment (TRV, air conditioner, etc.) is inaccurate to the point that self-regulation is insufficient. This happens when the internal thermometer is placed too close to the heat source. The internal temperature rises much faster than the room temperature, leading to regulation failures.
 Example:
 1. Room temperature is 18°, setpoint is 20°.
@@ -99,4 +101,4 @@ When this entity is 'On', all temperature or state changes made directly on the
 Be careful, if you use this feature, your equipment is now controlled in two ways: _VTherm_ and directly by you. The commands might be contradictory, which could lead to confusion about the equipment's state. _VTherm_ is equipped with a delay mechanism that prevents loops: the user gives a setpoint, which is captured by _VTherm_ and changes the setpoint, ... This delay may cause the change made directly on the equipment to be ignored if these changes are too close together in time.
 
 Some equipment (like Daikin, for example) changes state by itself. If the checkbox is checked, it may turn off the _VTherm_ when that's not what you intended.
-That's why it's better not to use it. It generates a lot of confusion and many support requests.
\ No newline at end of file
+That's why it's better not to use it. It generates a lot of confusion and many support requests.