diff --git a/src/Controller/Admin/DocumentController.php b/src/Controller/Admin/DocumentController.php
index 0a053ce..4fce876 100644
--- a/src/Controller/Admin/DocumentController.php
+++ b/src/Controller/Admin/DocumentController.php
@@ -373,6 +373,7 @@ class DocumentController extends AbstractController
         @unlink($params->get('mto.knowledge.ndjson'));
         @unlink($params->get('mto.knowledge.vector_index'));
         @unlink($params->get('mto.knowledge.vector_index_meta'));
+        @unlink($params->get('mto.knowledge.index_meta'));
         exec('rm -rf ' . $params->get('mto.knowledge.upload'));
 
         $sql = '