diff --git a/mk/windoze/build-mg.bat b/mk/windoze/build-mg.bat
index 44533c42..b9fe4cb0 100644
--- a/mk/windoze/build-mg.bat
+++ b/mk/windoze/build-mg.bat
@@ -8,6 +8,8 @@ cd /d "%~dp0"
 rem setup the Visual Studio 2008 environment
 ECHO --------------------------------
 ECHO Setting up Visual Studio 2008 environment vars...
+REM Ensure ultifds HP doesn't mess the build up
+SET Platform=
 call "c:\Program Files\Microsoft Visual Studio 9.0\vc\vcvarsall.bat"
 
 rem Update from SVN to latest rev