diff --git a/static/index.html b/static/index.html
index 8ebea22..fc0d2a0 100644
--- a/static/index.html
+++ b/static/index.html
@@ -10,7 +10,7 @@
 
         <div>
             <form action="/back" method="post">
-                <label>Saisir l’ID de la playlist (sans l’url): <input name="id" type="text" /></label> <br />
+                <label>Saisir l’ID de la playlist (sans l’url): <input name="id" type="text" required /></label> <br />
                 <label for="type-id">Choississez un type d’ID:</label>
                 <select name="type-id" id="type-id">
                     <option value="playlist">Playlist</option>