diff --git a/src/Database/Adapter/MariaDB.php b/src/Database/Adapter/MariaDB.php
index 5d02e3034..d0cbab116 100644
--- a/src/Database/Adapter/MariaDB.php
+++ b/src/Database/Adapter/MariaDB.php
@@ -313,6 +313,7 @@ public function getDocument(string $collection, string $id): Document
         }
 
         $document['$id'] = $document['_uid'];
+        $document['$internalId'] = $document['_id'];
         $document['$read'] = (isset($document['_read'])) ? json_decode($document['_read'], true) : [];
         $document['$write'] = (isset($document['_write'])) ? json_decode($document['_write'], true) : [];
 
@@ -1101,4 +1102,4 @@ protected function getPDO()
     {
         return $this->pdo;
     }
-}
\ No newline at end of file
+}