diff --git a/www/install/php/Update-21.10.11.php b/www/install/php/Update-21.10.11.php
index c97310ee79a..18765034ac6 100644
--- a/www/install/php/Update-21.10.11.php
+++ b/www/install/php/Update-21.10.11.php
@@ -29,14 +29,22 @@
 try {
     $errorMessage = "Impossible to update 'hosts' table";
     if (! str_contains(strtolower($pearDBO->getColumnType('hosts', 'notification_number')), 'bigint')) {
+        $pearDBO->beginTransaction();
+        $pearDBO->query("UPDATE `hosts` SET `notification_number`= 0 WHERE `notification_number`< 0");
         $pearDBO->query("ALTER TABLE `hosts` MODIFY `notification_number` BIGINT(20) UNSIGNED DEFAULT NULL");
     }
 
     $errorMessage = "Impossible to update 'services' table";
     if (! str_contains(strtolower($pearDBO->getColumnType('services', 'notification_number')), 'bigint')) {
+        $pearDBO->beginTransaction();
+        $pearDBO->query("UPDATE `services` SET `notification_number`= 0 WHERE `notification_number`< 0");
         $pearDBO->query("ALTER TABLE `services` MODIFY `notification_number` BIGINT(20) UNSIGNED DEFAULT NULL");
     }
 } catch (\Exception $e) {
+    if ($pearDBO->inTransaction()) {
+        $pearDBO->rollBack();
+    }
+
     $centreonLog->insertLog(
         4,
         $versionOfTheUpgrade . $errorMessage .