diff --git a/taxonomy_deep_index.module b/taxonomy_deep_index.module
index 70623c2..646f34c 100644
--- a/taxonomy_deep_index.module
+++ b/taxonomy_deep_index.module
@@ -87,7 +87,7 @@ function _taxonomy_deep_index_collect(EntityMetadataWrapper $entity_wrapper, &$s
   $result = array();
   if (_taxonomy_deep_index_wrapper_check($entity_wrapper, $seen)) {
     // By default do not descend into node and term references.
-    $exclude_types = variable_get('taxonomy_deep_index_exclude_entity_types', array('node', 'taxonomy_term'));
+    $exclude_types = variable_get('taxonomy_deep_index_exclude_entity_types', array('node', 'taxonomy_term', 'list<node>'));
     foreach ($entity_wrapper as $name => $field) {
       if ($field->type() == 'taxonomy_term') {
         try {