diff --git a/views/chapa-sigmoide/readme.erb b/views/chapa-sigmoide/readme.erb
index 1c996ad..750dc45 100644
--- a/views/chapa-sigmoide/readme.erb
+++ b/views/chapa-sigmoide/readme.erb
@@ -159,7 +159,7 @@
 	<figure>
 		<img src="/chapa-sigmoide/gregor.png"/>
 
-		<img src="/chapa-sigmoide/gregor-avatar.png"/>
+		<img src="/chapa-sigmoide/gregor-avatar.jpg"/>
 	</figure>
 
 	<div class="description">