diff --git a/app/celery/scheduled_tasks.py b/app/celery/scheduled_tasks.py
index 322c57979..58c887c85 100644
--- a/app/celery/scheduled_tasks.py
+++ b/app/celery/scheduled_tasks.py
@@ -198,16 +198,15 @@ def delete_invitations():
 def timeout_notifications():
     notifications = dao_timeout_notifications(current_app.config.get('SENDING_NOTIFICATIONS_TIMEOUT_PERIOD'))
 
-    if notifications:
-        for notification in notifications:
-            # queue callback task only if the service_callback_api exists
-            service_callback_api = get_service_callback_api_for_service(service_id=notification.service_id)
+    for notification in notifications:
+        # queue callback task only if the service_callback_api exists
+        service_callback_api = get_service_callback_api_for_service(service_id=notification.service_id)
 
-            if service_callback_api:
-                send_delivery_status_to_service.apply_async([str(id)], queue=QueueNames.CALLBACKS)
+        if service_callback_api:
+            send_delivery_status_to_service.apply_async([str(notification.id)], queue=QueueNames.CALLBACKS)
 
-        current_app.logger.info(
-            "Timeout period reached for {} notifications, status has been updated.".format(len(notifications)))
+    current_app.logger.info(
+        "Timeout period reached for {} notifications, status has been updated.".format(len(notifications)))
 
 
 @notify_celery.task(name='send-daily-performance-platform-stats')
diff --git a/tests/app/celery/test_scheduled_tasks.py b/tests/app/celery/test_scheduled_tasks.py
index 1a4522d14..c7ef8ca0c 100644
--- a/tests/app/celery/test_scheduled_tasks.py
+++ b/tests/app/celery/test_scheduled_tasks.py
@@ -58,7 +58,10 @@ from app.models import (
 )
 from app.utils import get_london_midnight_in_utc
 from app.v2.errors import JobIncompleteError
-from tests.app.db import create_notification, create_service, create_template, create_job, create_rate
+from tests.app.db import (
+    create_notification, create_service, create_template, create_job, create_rate,
+    create_service_callback_api
+)
 
 from tests.app.conftest import (
     sample_job as create_sample_job,
@@ -206,6 +209,18 @@ def test_should_not_update_status_of_letter_notifications(client, sample_letter_
     assert not2.status == 'created'
 
 
+def test_timeout_notifications_sends_status_update_to_service(client, sample_template, mocker):
+    create_service_callback_api(service=sample_template.service)
+    mocked = mocker.patch('app.celery.service_callback_tasks.send_delivery_status_to_service.apply_async')
+    notification = create_notification(
+        template=sample_template,
+        status='sending',
+        created_at=datetime.utcnow() - timedelta(
+            seconds=current_app.config.get('SENDING_NOTIFICATIONS_TIMEOUT_PERIOD') + 10))
+    timeout_notifications()
+    mocked.assert_called_once_with([str(notification.id)], queue=QueueNames.CALLBACKS)
+
+
 def test_should_update_scheduled_jobs_and_put_on_queue(notify_db, notify_db_session, mocker):
     mocked = mocker.patch('app.celery.tasks.process_job.apply_async')