diff --git a/app/Ninja/Transformers/DocumentTransformer.php b/app/Ninja/Transformers/DocumentTransformer.php
index 95e4b281bec4..4130bbd6c459 100644
--- a/app/Ninja/Transformers/DocumentTransformer.php
+++ b/app/Ninja/Transformers/DocumentTransformer.php
@@ -14,7 +14,7 @@ class DocumentTransformer extends EntityTransformer
             'type' =>  $document->type,
             'invoice_id' => isset($document->invoice->public_id) ? (int) $document->invoice->public_id : null,
             'expense_id' => isset($document->expense->public_id) ? (int) $document->expense->public_id : null,
-            'updated_at' => $this->getTimestamp($account->updated_at),
+            'updated_at' => $this->getTimestamp($document->updated_at),
         ]);
     }
 }