diff --git a/contrib/wix/dist.wxs b/contrib/wix/dist.wxs
--- a/contrib/wix/dist.wxs
+++ b/contrib/wix/dist.wxs
@@ -15,7 +15,7 @@
         <File Name="mercurial.osutil.pyd" />
         <File Name="mercurial.parsers.pyd" />
         <File Name="pyexpat.pyd" />
-        <File Name="python26.dll" />
+        <File Name="python27.dll" />
         <File Name="bz2.pyd" />
         <File Name="select.pyd" />
         <File Name="unicodedata.pyd" />