diff --git a/radicale/__main__.py b/radicale/__main__.py
index 2e1a9024..209348f1 100644
--- a/radicale/__main__.py
+++ b/radicale/__main__.py
@@ -29,11 +29,11 @@ import os
 import signal
 import socket
 import sys
+from types import FrameType
 from typing import List, Optional, cast
 
 from radicale import VERSION, config, log, server, storage, types
 from radicale.log import logger
-from types import FrameType
 
 
 def run() -> None:
diff --git a/radicale/app/base.py b/radicale/app/base.py
index c7cf4148..4faf52d1 100644
--- a/radicale/app/base.py
+++ b/radicale/app/base.py
@@ -21,13 +21,12 @@ import sys
 import xml.etree.ElementTree as ET
 from typing import Optional
 
-# HACK: https://github.com/tiran/defusedxml/issues/54
-import defusedxml.ElementTree as DefusedET  # isort:skip
-
 from radicale import (auth, hook, config, httputils, pathutils, rights, storage,
                       types, web, xmlutils)
 from radicale.log import logger
 
+# HACK: https://github.com/tiran/defusedxml/issues/54
+import defusedxml.ElementTree as DefusedET  # isort:skip
 sys.modules["xml.etree"].ElementTree = ET  # type:ignore[attr-defined]
 
 
diff --git a/radicale/app/delete.py b/radicale/app/delete.py
index 4980a8ad..8335ee11 100644
--- a/radicale/app/delete.py
+++ b/radicale/app/delete.py
@@ -94,4 +94,4 @@ class ApplicationPartDelete(ApplicationBase):
             for i in hook_notification_item_list:
                 self._hook.notify(i)
             headers = {"Content-Type": "text/xml; charset=%s" % self._encoding}
-            return client.OK, headers, self._write_xml_content(xml_answer)
+            return client.OK, headers, self._xml_response(xml_answer)
diff --git a/radicale/app/put.py b/radicale/app/put.py
index 3c394ce5..cf2a15fb 100644
--- a/radicale/app/put.py
+++ b/radicale/app/put.py
@@ -22,6 +22,7 @@ import posixpath
 import socket
 import sys
 from http import client
+from types import TracebackType
 from typing import Iterator, List, Mapping, MutableMapping, Optional, Tuple
 
 import vobject
@@ -31,7 +32,6 @@ from radicale import httputils, pathutils, rights, storage, types, xmlutils
 from radicale.app.base import Access, ApplicationBase
 from radicale.hook import HookNotificationItem, HookNotificationItemTypes
 from radicale.log import logger
-from types import TracebackType
 
 MIMETYPE_TAGS: Mapping[str, str] = {value: key for key, value in
                                     xmlutils.MIMETYPES.items()}
diff --git a/radicale/item/__init__.py b/radicale/item/__init__.py
index 995508fc..4a3fc22e 100644
--- a/radicale/item/__init__.py
+++ b/radicale/item/__init__.py
@@ -36,8 +36,8 @@ from typing import (Any, Callable, List, MutableMapping, Optional, Sequence,
 
 import vobject
 
-from radicale import pathutils
 from radicale import storage  # noqa:F401
+from radicale import pathutils
 from radicale.item import filter as radicale_filter
 from radicale.log import logger