diff --git a/core/themes/engines/twig/twig.engine b/core/themes/engines/twig/twig.engine
index a317124..f6bd261 100644
--- a/core/themes/engines/twig/twig.engine
+++ b/core/themes/engines/twig/twig.engine
@@ -56,7 +56,7 @@ function twig_render_template($template_file, $variables) {
   );
   if (settings()->get('twig_debug', FALSE)) {
     $output['debug_prefix'] .= "\n\n<!-- THEME DEBUG -->";
-    $output['debug_prefix'] .= "\n<!-- CALL: _theme('{$variables['theme_hook_original']}') -->";
+    $output['debug_prefix'] .= "\n<!-- THEME FUNCTION CALLED: '{$variables['theme_hook_original']}' -->";
     if (!empty($variables['theme_hook_suggestions'])) {
       $extension = twig_extension();
       $current_template = basename($template_file);