diff --git a/Lib/lib-old/packmail.py b/Lib/lib-old/packmail.py
index 8d247bc503c..9c2b5662f61 100644
--- a/Lib/lib-old/packmail.py
+++ b/Lib/lib-old/packmail.py
@@ -102,7 +102,7 @@ def packtree(outfp, dirname):
 		packtree(outfp, subdirname)
 
 def unixfix(name):
-	comps = name.splitfields(os.sep)
+	comps = name.split(os.sep)
 	res = ''
 	for comp in comps:
 		if comp: