diff --git a/modules/worker/back/models/operator.js b/modules/worker/back/models/operator.js
index 1ebc1643c..d1a30f7db 100644
--- a/modules/worker/back/models/operator.js
+++ b/modules/worker/back/models/operator.js
@@ -18,7 +18,7 @@ module.exports = Self => {
             const {backupPrinterNotificationDelay} = await models.ProductionConfig.findOne();
             if (backupPrinterNotificationDelay) {
                 const notifications = await models.NotificationQueue.find(
-                    {where: {created: {gte: Date.vnNow() - (backupPrinterNotificationDelay * 1000) + (3600 * 1000)},
+                    {where: {created: {gte: new Date(Date.vnNow() - (backupPrinterNotificationDelay * 1000))},
                         notificationFk: notificationName,
                         status: 'sent'
                     }