diff --git a/core/ormdocument.class.inc.php b/core/ormdocument.class.inc.php
index f228ddd84..337b686e0 100644
--- a/core/ormdocument.class.inc.php
+++ b/core/ormdocument.class.inc.php
@@ -282,6 +282,7 @@ class ormDocument
 				if($sContentDisposition === static::ENUM_CONTENT_DISPOSITION_ATTACHMENT) {
 					$oDocument->IncreaseDownloadsCount();
 					$oObj->Set($sAttCode, $oDocument);
+					$oObj->AllowWrite();
 					$oObj->DBUpdate();
 				}
 			}