diff --git a/install/db/159-database.php b/install/db/159-database.php
new file mode 100644
index 000000000..affe973de
--- /dev/null
+++ b/install/db/159-database.php
@@ -0,0 +1,24 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | This file is part of Piwigo.                                          |
+// |                                                                       |
+// | For copyright and license information, please view the COPYING.txt    |
+// | file that was distributed with this source code.                      |
+// +-----------------------------------------------------------------------+
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+$upgrade_description = 'add index on images.path';
+
+$query = '
+ALTER TABLE '. IMAGES_TABLE .'
+  ADD INDEX `images_i7` (`path`) 
+;';
+pwg_query($query);
+
+echo "\n".$upgrade_description."\n";
+
+?>