--- a/Source/bindings/derived_sources.gyp
+++ b/Source/bindings/derived_sources.gyp
@@ -94,9 +94,11 @@
     'actions': [{
       'action_name': 'touchDOMWindow',
        'variables': {
+        'other_idl_files': '<(idl_files))',
+        'other_idl_files/': [['exclude', 'DOMWindow\\.idl$']],
         # Write sources into a file, so that the action command line won't
         # exceed OS limits.
-        'idl_files_list': '<|(idl_files_list.tmp <@(idl_files))',
+        'idl_files_list': '<|(idl_files_list.tmp <@(other_idl_files))',
       },
       'inputs': [
         '<(idl_files_list)',