diff --git a/Variant-ADC.md b/Variant-ADC.md
index 0e47890..4299124 100644
--- a/Variant-ADC.md
+++ b/Variant-ADC.md
@@ -8,6 +8,7 @@ This variant can be used with potentiometers or hall sensors.
 ⚠ Red wire from sensor cable delivers 15v !!!
 Use 3.3v from programming port or a voltage regulator.
 
+## Calibration:
 Proceed with [calibration](https://github.com/EmanuelFeru/hoverboard-firmware-hack-FOC/wiki/Calibration) for better control.