diff --git a/readme.md b/readme.md
index e162b9b..db0eaa0 100644
--- a/readme.md
+++ b/readme.md
@@ -77,7 +77,7 @@ If you're short on GPIOs, there is a way to use a single GPIO for multiple butto
 
 [https://www.instructables.com/RaspberryPi-Multiple-Buttons-On-One-Digital-Pin/](https://www.instructables.com/RaspberryPi-Multiple-Buttons-On-One-Digital-Pin/)  
 
-#### Potentiometer circuit
+#### Rotary encoder circuit
 
 Using [https://github.com/Tr3m/rpi-rotary-encoder](https://github.com/Tr3m/rpi-rotary-encoder), we can use a 3-pins rotary encoder to control volume.