diff --git a/cpplint.bat b/cpplint.bat
index 039b10dc0..ff3f84a0d 100644
--- a/cpplint.bat
+++ b/cpplint.bat
@@ -1,4 +1,5 @@
 @echo off
+setlocal
 :: This is required with cygwin only.
 PATH=%~dp0;%PATH%
 call python "%~dp0cpplint.py" %*
diff --git a/gcl.bat b/gcl.bat
index f67334951..2a866ce55 100755
--- a/gcl.bat
+++ b/gcl.bat
@@ -1,4 +1,5 @@
 @echo off
+setlocal
 :: This is required with cygwin only.
 PATH=%~dp0;%PATH%
 call python "%~dp0gcl.py" %*