--- a/mercurial/windows.py	Tue Jun 23 14:28:15 2015 -0700
+++ b/mercurial/windows.py	Tue Jun 23 22:30:33 2015 -0700
@@ -25,7 +25,7 @@
 testpid = win32.testpid
 unlink = win32.unlink
 
-umask = 0022
+umask = 0o022
 
 def posixfile(name, mode='r', buffering=-1):
     '''Open a file with even more POSIX-like semantics'''