diff --git a/README.md b/README.md
index e1570e0..3946ba8 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 
 In order to use the LED we need to enable the SPI interface on the Rpi. 
 You can enable it by running `sudo raspi-config`, or by manually adding `dtparam=spi=on` to `/boot/firmware/config.txt`.
+Enable PWM ->  add dtoverlay=pwm to /boot/config.txt
 
 # Config