diff --git a/app/celery/letters_pdf_tasks.py b/app/celery/letters_pdf_tasks.py
index 0f26c1fdc..6e9bc6210 100644
--- a/app/celery/letters_pdf_tasks.py
+++ b/app/celery/letters_pdf_tasks.py
@@ -123,8 +123,7 @@ def update_validation_failed_for_templated_letter(self, notification_id, page_co
     notification = get_notification_by_id(notification_id, _raise=True)
     notification.status = NOTIFICATION_VALIDATION_FAILED
     dao_update_notification(notification)
-    current_app.logger.info(f"Letter notification id: {notification_id} reference {notification.reference}: "
-                            f"validation failed: letter is too long {page_count}")
+    current_app.logger.info(f"Validation failed: letter is too long {page_count} for letter with id: {notification_id}")
 
 
 @notify_celery.task(name='collate-letter-pdfs-to-be-sent')
diff --git a/tests/app/celery/test_letters_pdf_tasks.py b/tests/app/celery/test_letters_pdf_tasks.py
index 1de2d8379..a2419508a 100644
--- a/tests/app/celery/test_letters_pdf_tasks.py
+++ b/tests/app/celery/test_letters_pdf_tasks.py
@@ -190,8 +190,7 @@ def test_update_validation_failed_for_templated_letter_with_too_many_pages(
     assert sample_letter_notification.billable_units == 0
     assert sample_letter_notification.status == NOTIFICATION_VALIDATION_FAILED
     mock_logger.assert_called_once_with(
-         f"Letter notification id: {sample_letter_notification.id} reference {sample_letter_notification.reference}: "
-         f"validation failed: letter is too long 11"
+         f"Validation failed: letter is too long 11 for letter with id: {sample_letter_notification.id}"
     )