diff --git a/Lib/distutils/filelist.py b/Lib/distutils/filelist.py
--- a/Lib/distutils/filelist.py
+++ b/Lib/distutils/filelist.py
@@ -328,8 +328,7 @@ def translate_pattern(pattern, anchor=1,
         # ditch end of pattern character
         empty_pattern = glob_to_re('')
         prefix_re = glob_to_re(prefix)[:-len(empty_pattern)]
-        # paths should always use / in manifest templates
-        pattern_re = "^%s/.*%s" % (prefix_re, pattern_re)
+        pattern_re = "^" + os.path.join(prefix_re, ".*" + pattern_re)
     else:                               # no prefix -- respect anchor flag
         if anchor:
             pattern_re = "^" + pattern_re
diff --git a/Lib/distutils/tests/test_filelist.py b/Lib/distutils/tests/test_filelist.py
--- a/Lib/distutils/tests/test_filelist.py
+++ b/Lib/distutils/tests/test_filelist.py
@@ -48,6 +48,7 @@ class FileListTestCase(support.LoggingSi
         self.assertEqual(glob_to_re('foo????'), r'foo[^/][^/][^/][^/]\Z(?ms)')
         self.assertEqual(glob_to_re(r'foo\\??'), r'foo\\\\[^/][^/]\Z(?ms)')
 
+    @skipIf(os.name == 'nt', 'known bug on Windows, see #13193')
     def test_process_template_line(self):
         # testing  all MANIFEST.in template patterns
         file_list = FileList()
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -210,8 +210,6 @@ Library
 - Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly
   handles non-valid attributes, including adjacent and unquoted attributes.
 
-- Issue #13193: Fix distutils.filelist.FileList under Windows.
-
 - Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely
   when called with a timeout.  Patch by Arnaud Ysmal.