diff --git a/app/Http/Controllers/Api/V1/ItemController.php b/app/Http/Controllers/Api/V1/ItemController.php
index c99fbba42..c264fc52d 100644
--- a/app/Http/Controllers/Api/V1/ItemController.php
+++ b/app/Http/Controllers/Api/V1/ItemController.php
@@ -40,6 +40,7 @@ class ItemController extends Controller
         'exhibition',
         'box',
         'location',
+        'location.tree',
     ];
 
     private $rangeables = ['date_earliest', 'date_latest', 'additionals.order'];
diff --git a/config/elasticsearch/mapping/items.php b/config/elasticsearch/mapping/items.php
index 57c0cb447..62a02f122 100644
--- a/config/elasticsearch/mapping/items.php
+++ b/config/elasticsearch/mapping/items.php
@@ -192,6 +192,12 @@
         ],
         'location' => [
             'type' => 'keyword',
+            'fields' => [
+                'tree' => [
+                    'type' => 'text',
+                    'analyzer' => 'tree_analyzer',
+                ],
+            ],
         ],
         'frontend' => [
             'type' => 'keyword',