diff --git a/README_CZ.md b/README_CZ.md
index 2fa4319..6978f1e 100644
--- a/README_CZ.md
+++ b/README_CZ.md
@@ -19,7 +19,7 @@ Na desce, kromě RJ45, RS485 a USB-C, najdeš i náš uŠup konektor pro připoj
 
 ESPlan koupíš na 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)