diff --git a/Tools/msi/msilib.py b/Tools/msi/msilib.py
index 23a40a0..6f49b4c 100644
--- a/Tools/msi/msilib.py
+++ b/Tools/msi/msilib.py
@@ -5,7 +5,7 @@
 import win32com.client
 import pythoncom, pywintypes
 from win32com.client import constants
-import re, string, os, sets, glob, subprocess, sys, winreg, struct
+import re, string, os, sets, glob, subprocess, sys, _winreg, struct
 
 try:
     basestring
@@ -387,9 +387,9 @@
                      (r"Software\Microsoft\Win32SDK\Directories", "Install Dir"),
                     ]:
             try:
-                key = winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, k)
-                dir = winreg.QueryValueEx(key, v)[0]
-                winreg.CloseKey(key)
+                key = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, k)
+                dir = _winreg.QueryValueEx(key, v)[0]
+                _winreg.CloseKey(key)
             except (WindowsError, IndexError):
                 continue
             cabarc = os.path.join(dir, r"Bin", "cabarc.exe")