diff --git a/src/Mellisearch/Index.php b/src/Mellisearch/Index.php
index cef2888..4ff71fe 100644
--- a/src/Mellisearch/Index.php
+++ b/src/Mellisearch/Index.php
@@ -40,7 +40,7 @@ public function insert($document)
 
     public function delete($document)
     {
-        $this->getIndex()->deleteDocument($this->getSafeDocmentID($document->reference()));
+        $this->getIndex()->deleteDocument($this->getSafeDocmentID($document->getSearchReference()));
     }
 
     public function exists()