diff --git a/js/Client/flashMessenger.js b/js/Client/flashMessenger.js
index 69571935018c60df50d637ebd486333bf7a3664c..4dc25f9ff1fb3cb0ac9966084dbc606a889e8910 100644
--- a/js/Client/flashMessenger.js
+++ b/js/Client/flashMessenger.js
@@ -113,7 +113,7 @@ function toast(message, severity) {
     // Création et affichage du toast avec bootstrap
     const options = {
         animation: true,
-        delay: 5000,
+        delay: severity === 'warning' ? 15000 : 5000,
         autohide: severity !== 'error'
     };
     let bsToast = new bootstrap.Toast(toast, options);