diff --git a/Tools/buildbot/clean-amd64.bat b/Tools/buildbot/clean-amd64.bat
index 9fb35e94532..715805a7c11 100644
--- a/Tools/buildbot/clean-amd64.bat
+++ b/Tools/buildbot/clean-amd64.bat
@@ -1,7 +1,10 @@
 @rem Used by the buildbot "clean" step.
 call "%VS90COMNTOOLS%\..\..\VC\vcvarsall.bat" x86_amd64
-cd PCbuild
 @echo Deleting .pyc/.pyo files ...
 del /s Lib\*.pyc Lib\*.pyo
+@echo Deleting test leftovers ...
+rmdir /s /q build
+cd PCbuild
 vcbuild /clean pcbuild.sln "Release|x64"
 vcbuild /clean pcbuild.sln "Debug|x64"
+cd ..
diff --git a/Tools/buildbot/clean.bat b/Tools/buildbot/clean.bat
index ec71804da01..5c8f33eccaa 100644
--- a/Tools/buildbot/clean.bat
+++ b/Tools/buildbot/clean.bat
@@ -2,6 +2,9 @@
 call "%VS90COMNTOOLS%vsvars32.bat"
 @echo Deleting .pyc/.pyo files ...
 del /s Lib\*.pyc Lib\*.pyo
+@echo Deleting test leftovers ...
+rmdir /s /q build
 cd PCbuild
 vcbuild /clean pcbuild.sln "Release|Win32"
 vcbuild /clean pcbuild.sln "Debug|Win32"
+cd ..