diff --git a/static/css/cours.css b/static/css/cours.css
index 9871b74..5678464 100644
--- a/static/css/cours.css
+++ b/static/css/cours.css
@@ -64,6 +64,10 @@ aside li.directory {
   cursor: pointer;
 }
 
+aside a {
+  text-decoration: none;
+}
+
 /* Image */
 main img {
   max-width: 100%;