diff --git a/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Documents/Action.php b/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Documents/Action.php
index c43c6114ef..65b3be2130 100644
--- a/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Documents/Action.php
+++ b/src/Appwrite/Platform/Modules/Databases/Http/Databases/Collections/Documents/Action.php
@@ -259,7 +259,7 @@ abstract class Action extends DatabasesAction
         $relationId = null;
 
         if ($relation instanceof Document) {
-            $relationId = $relation->getAttribute('$id');
+            $relationId = $relation->getId();
         } elseif (\is_string($relation)) {
             $relationId = $relation;
         } elseif (\is_array($relation) && \array_values($relation) !== $relation) {