diff --git a/src/js/AJAX/utils.js b/src/js/AJAX/utils.js
index 5ac5d18..0267288 100644
--- a/src/js/AJAX/utils.js
+++ b/src/js/AJAX/utils.js
@@ -18,12 +18,15 @@ function ajaxRequest(type, url, callback, data = null)
         {
             case 200:
             case 201:
-                console.log(xhr.responseText);
-                callback(JSON.parse(xhr.responseText));
+                break;
+            case 404:
+                alert("Erreur 404: Page non trouvée");
+                break;
+            case 500:
+                alert("Erreur 500: Erreur interne du serveur");
                 break;
             default:
-                console.log("Error: " + xhr.status);
-                alert("Error: " + xhr.status);
+                alert("Erreur: " + xhr.status);
                 break;
         }
     };