diff --git a/add_attributes.function.php b/add_attributes.function.php
index 9e95113..79fc1ae 100644
--- a/add_attributes.function.php
+++ b/add_attributes.function.php
@@ -7,6 +7,10 @@
 use Drupal\Core\Template\Attribute;
 
 $function = new Twig_SimpleFunction('add_attributes', function ($context, $additional_attributes = []) {
+  if (!$additional_attributes) {
+    return;
+  }
+  
   if (class_exists('Drupal')) {
     $attributes = new Attribute();