--- taxonomy.views.inc	2010-04-06 12:59:29.000000000 -0700
+++ taxonomy.views.inc	2010-04-13 15:19:03.000000000 -0700
@@ -462,6 +462,7 @@ function taxonomy_views_plugins() {
         'title' => t('Taxonomy Term ID from URL'),
         'handler' => 'views_plugin_argument_default_taxonomy_tid',
         'path' => drupal_get_path('module', 'views') . '/modules/taxonomy',
+        'parent' => 'fixed',
       ),
     ),
   );