diff --git a/static/css/cours.css b/static/css/cours.css
index 4d05a94..0952432 100644
--- a/static/css/cours.css
+++ b/static/css/cours.css
@@ -52,7 +52,7 @@ aside li.directory {
 
 @media print {
   aside {
-    visibility: hidden;
+    display: none;
   }
 }