diff --git a/src/Loader.php b/src/Loader.php
index 93c0b17..1e07eb8 100644
--- a/src/Loader.php
+++ b/src/Loader.php
@@ -39,7 +39,7 @@ function __filter_get_user_metadata($data, $object_id, $meta_key, $single)
             return $data;
         }
 
-        return 'all';
+        return ['all'];
     }
 
     function __action_graphql_init()