diff --git a/apps/a_clock_timer/README.md b/apps/a_clock_timer/README.md
index c2a5a0c36..e8e2647a9 100644
--- a/apps/a_clock_timer/README.md
+++ b/apps/a_clock_timer/README.md
@@ -9,7 +9,7 @@
 * World Map
   *  The yellow line shows the position of the sun
 
-![](screenshot.jpg)
+![](screenshot.png)
 
 ## Creator
 [@alainsaas](https://github.com/alainsaas)