diff --git a/Lib/distutils/filelist.py b/Lib/distutils/filelist.py
index ebd1411..5540b39 100644
--- a/Lib/distutils/filelist.py
+++ b/Lib/distutils/filelist.py
@@ -328,10 +328,8 @@
         # ditch end of pattern character
         empty_pattern = glob_to_re('')
         prefix_re = glob_to_re(prefix)[:-len(empty_pattern)]
-        # match both path separators, as in Postel's principle
-        sep_pat = "[" + re.escape(os.path.sep + os.path.altsep
-                                  if os.path.altsep else os.path.sep) + "]"
-        pattern_re = "^" + sep_pat.join([prefix_re, ".*" + pattern_re])
+        # paths should always use / in manifest templates
+        pattern_re = "^%s/.*%s" % (prefix_re, pattern_re)
     else:                               # no prefix -- respect anchor flag
         if anchor:
             pattern_re = "^" + pattern_re
diff --git a/Misc/NEWS b/Misc/NEWS
index 15293b1..b48761c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -210,8 +210,7 @@
 - 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.  The
-  "recursive-include" directive now recognizes both legal path separators.
+- 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.