diff --git a/src/app/notifications/controllers/NotificationsScheduleController.php b/src/app/notifications/controllers/NotificationsScheduleController.php
index 2f1431a8b8aebc771ebd95b55592d94889857712..d3263529cbce3d9d6614d305628ea10ae6e485fa 100644
--- a/src/app/notifications/controllers/NotificationsScheduleController.php
+++ b/src/app/notifications/controllers/NotificationsScheduleController.php
@@ -86,8 +86,8 @@ class NotificationsScheduleController
                 'months'        => json_decode($value['months']),
                 'daysOfMonth'   => json_decode($value['days_of_month']),
                 'daysOfWeek'    => json_decode($value['days_of_week']),
-                'startTime'     => (new \DateTime($value['start_time']))->format('H:i'),
-                'endTime'       => (new \DateTime($value['end_time']))->format('H:i'),
+                'startTime'     => (new \DateTime($value['start_time'] ?? ''))->format('H:i'),
+                'endTime'       => (new \DateTime($value['end_time'] ?? ''))->format('H:i'),
                 'frequency'     => $value['frequency'],
                 'frequencyMode' => $value['frequency_mode'],
                 'status'        => $value['status'],