diff --git a/update/api.php b/update/api.php
index ee08e6e6c..37496fb95 100755
--- a/update/api.php
+++ b/update/api.php
@@ -4,6 +4,8 @@
 * Creazione dei campi per l'API (created_at e updated_at)
 */
 
+use API\Response;
+
 // I record precedenti vengono impostati a NULL
 $tables = include __DIR__.'/tables.php';
 
@@ -16,7 +18,7 @@ foreach ($tables as $table) {
             $database->query('ALTER TABLE `'.$table.'` ADD `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP');
         }
 
-        if (API\Response::isCompatible()) {
+        if (Response::isCompatible()) {
             $updated_at = $database->fetchArray(str_replace('|field|', 'updated_at', $query));
             if (empty($updated_at)) {
                 $database->query('ALTER TABLE `'.$table.'` ADD `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP');