diff --git a/src/tools/msvc/build.bat b/src/tools/msvc/build.bat
index 8ef282cef49..fe736dde471 100755
--- a/src/tools/msvc/build.bat
+++ b/src/tools/msvc/build.bat
@@ -1,4 +1,5 @@
 @echo off
+SETLOCAL
 SET STARTDIR=%CD%
 if exist src\tools\msvc\buildenv.bat call src\tools\msvc\buildenv.bat
 if exist buildenv.bat call buildenv.bat