diff --git a/README.md b/README.md
index 19b1ee1..ab13c01 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Mastodon for YunoHost
 
 [![Integration level](https://dash.yunohost.org/integration/mastodon.svg)](https://dash.yunohost.org/appci/app/mastodon) ![](https://ci-apps.yunohost.org/ci/badges/mastodon.status.svg) ![](https://ci-apps.yunohost.org/ci/badges/mastodon.maintain.svg)    
-[![Install Mastodon with YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=mastodon)
+[![Install Mastodon with YunoHost](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=mastodon)
 
 *[Lire ce readme en français.](./README_fr.md)*