diff --git a/core/themes/engines/twig/twig.engine b/core/themes/engines/twig/twig.engine
index b865330..05fda30 100644
--- a/core/themes/engines/twig/twig.engine
+++ b/core/themes/engines/twig/twig.engine
@@ -47,7 +47,6 @@ function twig_init(Extension $theme) {
  *   The output generated by the template, plus any debug information.
  */
 function twig_render_template($template_file, $variables) {
-  $variables['_references'] = array();
   $output = array(
     'debug_prefix'    => '',
     'debug_info'      => '',