diff --git a/src/calibre/ebooks/docx/writer/from_html.py b/src/calibre/ebooks/docx/writer/from_html.py
index c7858bb25f..ee81df8835 100644
--- a/src/calibre/ebooks/docx/writer/from_html.py
+++ b/src/calibre/ebooks/docx/writer/from_html.py
@@ -171,14 +171,11 @@ class Convert(object):
         self.styles_manager = StylesManager()
         self.images_manager = ImagesManager(self.oeb, self.docx.document_relationships)
 
-        try:
-            for item in self.oeb.spine:
-                self.process_item(item)
+        for item in self.oeb.spine:
+            self.process_item(item)
 
-            self.styles_manager.finalize(self.blocks)
-            self.write()
-        finally:
-            self.images_manager.cleanup()
+        self.styles_manager.finalize(self.blocks)
+        self.write()
 
     def process_item(self, item):
         stylizer = self.svg_rasterizer.stylizer_cache.get(item)
diff --git a/src/calibre/ebooks/docx/writer/images.py b/src/calibre/ebooks/docx/writer/images.py
index fbb8bbbc19..9b8e1a7d5a 100644
--- a/src/calibre/ebooks/docx/writer/images.py
+++ b/src/calibre/ebooks/docx/writer/images.py
@@ -7,7 +7,7 @@ __license__ = 'GPL v3'
 __copyright__ = '2015, Kovid Goyal <kovid at kovidgoyal.net>'
 
 import os
-import shutil, posixpath
+import posixpath
 from collections import namedtuple
 from functools import partial
 from future_builtins import map
@@ -17,7 +17,6 @@ from lxml import etree
 from calibre.ebooks.oeb.base import urlunquote
 from calibre.ebooks.docx.names import makeelement, namespaces
 from calibre.ebooks.docx.images import pt_to_emu
-from calibre.ptempfile import PersistentTemporaryDirectory
 from calibre.utils.filenames import ascii_filename
 from calibre.utils.magick.draw import identify_data
 
@@ -37,20 +36,8 @@ class ImagesManager(object):
         self.images = {}
         self.seen_filenames = set()
         self.document_relationships = document_relationships
-        self._tdir = None
         self.count = 0
 
-    @property
-    def tdir(self):
-        if self._tdir is None:
-            self._tdir = PersistentTemporaryDirectory(suffix='_docx_output_images')
-        return self._tdir
-
-    def cleanup(self):
-        if self._tdir is not None:
-            shutil.rmtree(self._tdir)
-            self._tdir = None
-
     def add_image(self, img, block, stylizer):
         src = img.get('src')
         if not src: