diff --git a/README_fr.md b/README_fr.md
index 5d92c85..94cd9a9 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -1,7 +1,7 @@
 # Radicale pour YunoHost
 
 [![Niveau d'intégration](https://dash.yunohost.org/integration/radicale.svg)](https://dash.yunohost.org/appci/app/radicale) ![](https://ci-apps.yunohost.org/ci/badges/radicale.status.svg) ![](https://ci-apps.yunohost.org/ci/badges/radicale.maintain.svg)  
-[![Installer Radicale avec YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=radicale)
+[![Installer Radicale avec YunoHost](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=radicale)
 
 *[Read this readme in english.](./README.md)*