diff --git a/migration/20.10/migrateNotificationsProperties.php b/migration/20.10/migrateNotificationsProperties.php
index 3aa007c1192eac0fcc1bd6af496dfa64c8f23297..96b18129efd173e68f671c7ca59df9c12a2d40c1 100644
--- a/migration/20.10/migrateNotificationsProperties.php
+++ b/migration/20.10/migrateNotificationsProperties.php
@@ -26,8 +26,10 @@ foreach ($customs as $custom) {
             $users = array_column($users, 'id');
             if (!empty($users)) {
                 $users = implode(',', $users);
-                \Notification\models\NotificationModel::update(['notification_sid' => $notification['notification_sid'], 'diffusion_properties' => $users]);
+            } else {
+                $users = null;
             }
+            \Notification\models\NotificationModel::update(['notification_sid' => $notification['notification_sid'], 'diffusion_properties' => $users]);
         }
     }
     $migrated++;