diff --git a/static/js/cours.js b/static/js/cours.js
index 5f539a9..5eb8869 100644
--- a/static/js/cours.js
+++ b/static/js/cours.js
@@ -5,10 +5,18 @@
  */
 const cleanURL = (url) => url.split("#")[0];
 
+/**
+ * Capitalize a text
+ * @param {string} text Input text
+ * @returns Capitalize text
+ */
+const capitalize = (text) =>
+  text.length === 0 ? text : text[0].toUpperCase() + text.substring(1);
+
 /**
  * Build the filetree
  * @param {HTMLElement} parent Root element of the filetree
- * @param {{name: string, is_dir: boolean, children: any[]}} data FileNode
+ * @param {{name: string, is_dir: boolean, children: any[]}[]} data FileNode
  * @param {string} location Current location, used for links creation
  */
 const buildFileTree = (parent, data, location) => {
@@ -39,7 +47,9 @@ const buildFileTree = (parent, data, location) => {
       // File
       const url = cleanURL(window.location.href).split("?")[0];
       const a = document.createElement("a");
-      a.text = item.name;
+      a.text = capitalize(
+        item.name.endsWith(".md") ? item.name.slice(0, -3) : item.name
+      );
       a.href = `${url}?q=${location}${item.name}`;
       li.appendChild(a);
     }