--- a/accessible/ipc/win/moz.build
+++ b/accessible/ipc/win/moz.build
@@ -1,15 +1,16 @@
 # -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
 # vim: set filetype=python:
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-DIRS += ['typelib']
+if CONFIG['COMPILE_ENVIRONMENT']:
+    DIRS += ['typelib']
 
 # With --disable-accessibility, we need to compile PDocAccessible.ipdl (which
 # also depends on COMPtrTypes.h), but not the C++.
 IPDL_SOURCES += ['PDocAccessible.ipdl']
 EXPORTS.mozilla.a11y += ['COMPtrTypes.h']
 
 if CONFIG['ACCESSIBILITY']:
     EXPORTS.mozilla.a11y += [