diff --git a/mercurial/win32.py b/mercurial/win32.py
--- a/mercurial/win32.py
+++ b/mercurial/win32.py
@@ -24,6 +24,7 @@ import ctypes, errno, os, subprocess, ra
 
 # GetLastError
 _ERROR_SUCCESS = 0
+_ERROR_NO_MORE_FILES = 18
 _ERROR_SHARING_VIOLATION = 32
 _ERROR_INVALID_PARAMETER = 87
 _ERROR_INSUFFICIENT_BUFFER = 122