diff --git a/module/VuFind/src/VuFind/Search/Search2/ResultsFactory.php b/module/VuFind/src/VuFind/Search/Search2/ResultsFactory.php
index 52716e06bcc..68437e6c587 100644
--- a/module/VuFind/src/VuFind/Search/Search2/ResultsFactory.php
+++ b/module/VuFind/src/VuFind/Search/Search2/ResultsFactory.php
@@ -63,6 +63,9 @@ public function __invoke(ContainerInterface $container, $requestedName,
         $solr->setSpellingProcessor(
             new \VuFind\Search\Solr\SpellingProcessor($config->Spelling ?? null)
         );
+        $solr->setHierarchicalFacetHelper(
+            $container->get(\VuFind\Search\Solr\HierarchicalFacetHelper::class)
+        );
         return $solr;
     }
 }