diff --git a/admin_manual/configuration_user/user_configuration.rst b/admin_manual/configuration_user/user_configuration.rst
index 434dea0b61e..feef6139d68 100644
--- a/admin_manual/configuration_user/user_configuration.rst
+++ b/admin_manual/configuration_user/user_configuration.rst
@@ -217,3 +217,5 @@ download them from your Nextcloud Files page, which compresses them into a zip
 file, or use a sync client to copy them to your local computer. See
 :doc:`../configuration_files/file_sharing_configuration` to learn how to create
 persistent file shares that survive user deletions.
+
+.. note:: If you are using object storage such as OpenStack Swift or Amazon Simple Storage Service (S3) or any compatible S3-implementation (e.g. Minio or Ceph Object Gateway) as primary storage or external storage, you should first make sure the user's files have been deleted. Once a user is deleted, it is not possible to remove those objects from storage.