diff --git a/aegisub/tinderbox/windows/anpan.bat b/aegisub/tinderbox/windows/anpan.bat
index ee4ef5bef..aaeaa7488 100755
--- a/aegisub/tinderbox/windows/anpan.bat
+++ b/aegisub/tinderbox/windows/anpan.bat
@@ -22,5 +22,10 @@
 @set WindowsSdkDir=C:\Program Files\Microsoft SDKs\Windows\v6.0A\
 @set TEMP=C:\Users\Aegisub\AppData\Local\Temp
 @set TMP=C:\Users\Aegisub\AppData\Local\Temp
+@CommonProgramFiles=C:\Program Files\Common Files
+@CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
+@ProgramFiles=C:\Program Files
+@ProgramFiles(x86)=C:\Program Files (x86)
+
 
 msbuild aegisub\tinderbox\windows\aegisub_vs2008.sln /p:Configuration=%1 /p:Platform=%2 /v:d /nologo /t:rebuild