diff --git a/app/view/header.html b/app/view/header.html
index ee762f5441360f9fdea802f9a0a3508fec57e088..fe36718fe821f9b1df9c1b8c56c3995f949a7a55 100644
--- a/app/view/header.html
+++ b/app/view/header.html
@@ -3,7 +3,7 @@
     <meta charset="utf-8" />
     <meta name="author" content="La Quadrature du Net" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <link rel="icon" type="image/png" href="favicon.png" />
+    <link rel="icon" type="image/png" href="favicon.ico" />
 
     <!-- Open graph -->
     <meta property="og:title" content="{{ _('Soutenez La Quadrature du Net !') }}" />
diff --git a/www/favicon.png b/www/favicon.ico
similarity index 100%
rename from www/favicon.png
rename to www/favicon.ico