diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/filter/TaxonomyIndexTid.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/filter/TaxonomyIndexTid.php
index d98ac1b..b89928c 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/filter/TaxonomyIndexTid.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/filter/TaxonomyIndexTid.php
@@ -136,7 +136,7 @@ protected function valueForm(&$form, &$form_state) {
 
         if ($tree) {
           foreach ($tree as $term) {
-            $choice = new stdClass();
+            $choice = new \stdClass();
             $choice->option = array($term->tid => str_repeat('-', $term->depth) . $term->name);
             $options[] = $choice;
           }