diff --git a/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php b/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php
index 4fc3599e4e..16ad0b5a7c 100644
--- a/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php
+++ b/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php
@@ -1521,7 +1521,7 @@ class sqlfs_stream_wrapper implements iface_stream_wrapper
 		switch($type)
 		{
 			default:
-				$dsn = self::$pdo_type.':host='.$egw_db->Host.';port='.$egw_db->Port.';dbname='.$egw_db->Database;
+				$dsn = self::$pdo_type.':dbname='.$egw_db->Database.($egw_db->Host ? ';host='.$egw_db->Host.($egw_db->Port ? ';port='.$egw_db->Port : '') : '');
 				break;
 		}
 		// check once if pdo extension and DB specific driver is loaded or can be loaded