diff --git a/README.md b/README.md
index 45a5583..6882545 100755
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ On the board, in addition to RJ45, RS485 and USB-C, you will also find our usup
 
 The ESPlan in on this website https://www.laskakit.cz/laskakit-esplan-esp32-lan8720a-max485-poe/
 
-![ESPlan pinout](https://github.com/LaskaKit/ESPlan/blob/main/img/ESPlan_pinout.JPG)
+![ESPlan pinout](https://github.com/LaskaKit/ESPlan/blob/main/img/ESPlan_pinout.png)
 
 ![ESPlan](https://github.com/LaskaKit/ESPlan/blob/main/img/ESPlan%20(2).jpg)
 ![ESPlan](https://github.com/LaskaKit/ESPlan/blob/main/img/ESPlan%20(4).jpg)