diff --git a/frontend/public/js/app.js b/frontend/public/js/app.js
index 5695734..f282ba6 100644
--- a/frontend/public/js/app.js
+++ b/frontend/public/js/app.js
@@ -1,5 +1,7 @@
-// Configuration API
-const API_URL = 'http://localhost:4001/api';
+// Configuration API - Déterminer l'URL de base
+const API_URL = window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1'
+    ? 'http://localhost:4001/api'
+    : `http://${window.location.hostname}:4001/api`;
 
 // State
 let currentUser = null;