diff --git a/apply_issue.bat b/apply_issue.bat
index e610a1c02d..7e052ee345 100755
--- a/apply_issue.bat
+++ b/apply_issue.bat
@@ -2,6 +2,7 @@
 :: Copyright (c) 2012 The Chromium Authors. All rights reserved.
 :: Use of this source code is governed by a BSD-style license that can be
 :: found in the LICENSE file.
+setlocal
 
 :: This is required with cygwin only.
 PATH=%~dp0;%PATH%
diff --git a/clang-format.bat b/clang-format.bat
index d92e773a8e..af1c145793 100644
--- a/clang-format.bat
+++ b/clang-format.bat
@@ -2,6 +2,7 @@
 :: Copyright 2014 The Chromium Authors. All rights reserved.
 :: Use of this source code is governed by a BSD-style license that can be
 :: found in the LICENSE file.
+setlocal
 
 :: This is required with cygwin only.
 PATH=%~dp0;%PATH%
diff --git a/fetch.bat b/fetch.bat
index b469957469..b109623c05 100755
--- a/fetch.bat
+++ b/fetch.bat
@@ -2,6 +2,7 @@
 :: Copyright (c) 2013 The Chromium Authors. All rights reserved.
 :: Use of this source code is governed by a BSD-style license that can be
 :: found in the LICENSE file.
+setlocal
 
 :: This is required with cygwin only.
 PATH=%~dp0;%PATH%
diff --git a/gclient.bat b/gclient.bat
index f851c13004..42984c0b96 100755
--- a/gclient.bat
+++ b/gclient.bat
@@ -2,6 +2,7 @@
 :: Copyright (c) 2012 The Chromium Authors. All rights reserved.
 :: Use of this source code is governed by a BSD-style license that can be
 :: found in the LICENSE file.
+setlocal
 
 :: This is required with cygwin only.
 PATH=%~dp0;%PATH%
diff --git a/gn.bat b/gn.bat
index c020d89d80..250e4d9ac3 100644
--- a/gn.bat
+++ b/gn.bat
@@ -2,6 +2,7 @@
 :: Copyright 2013 The Chromium Authors. All rights reserved.
 :: Use of this source code is governed by a BSD-style license that can be
 :: found in the LICENSE file.
+setlocal
 
 :: This is required with cygwin only.
 PATH=%~dp0;%PATH%