diff --git a/Tools/buildbot/clean-amd64.bat b/Tools/buildbot/clean-amd64.bat
index 263e22bb37b..7ef5e02fb67 100644
--- a/Tools/buildbot/clean-amd64.bat
+++ b/Tools/buildbot/clean-amd64.bat
@@ -1,5 +1,5 @@
 @rem Used by the buildbot "clean" step.
-REM call "%VS71COMNTOOLS%vsvars32.bat"
+call "%VS71COMNTOOLS%vsvars32.bat"
 cd PCbuild
 @echo Deleting .pyc/.pyo files ...
 python.exe rmpyc.py