diff --git a/install/db/122-database.php b/install/db/122-database.php
new file mode 100644
index 000000000..f9c437b5a
--- /dev/null
+++ b/install/db/122-database.php
@@ -0,0 +1,83 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | Piwigo - a PHP based photo gallery                                    |
+// +-----------------------------------------------------------------------+
+// | Copyright(C) 2008-2012 Piwigo Team                  http://piwigo.org |
+// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
+// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
+// +-----------------------------------------------------------------------+
+// | This program is free software; you can redistribute it and/or modify  |
+// | it under the terms of the GNU General Public License as published by  |
+// | the Free Software Foundation                                          |
+// |                                                                       |
+// | This program is distributed in the hope that it will be useful, but   |
+// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
+// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
+// | General Public License for more details.                              |
+// |                                                                       |
+// | You should have received a copy of the GNU General Public License     |
+// | along with this program; if not, write to the Free Software           |
+// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA.                                                                  |
+// +-----------------------------------------------------------------------+
+
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+$upgrade_description = 'derivatives: new organization of "upload" and "galleries" directories';
+
+$query = '
+SELECT
+    id,
+    path,
+    tn_ext,
+    has_high,
+    high_filesize,
+    high_width,
+    high_height
+  FROM '.IMAGES_TABLE.'
+;';
+$result = pwg_query($query);
+$starttime = get_moment();
+
+$updates = array();
+
+while ($row = pwg_db_fetch_assoc($result))
+{
+  if ('true' == $row['has_high'])
+  {
+    $high_path = dirname($row['path']).'/pwg_high/'.basename($row['path']);
+    rename($high_path, $row['path']);
+
+    array_push(
+      $updates,
+      array(
+        'id' => $row['id'],
+        'width' => $row['high_width'],
+        'height' => $row['high_height'],
+        'filesize' => $row['high_filesize'],
+        )
+      );
+  }
+}
+
+if (count($updates) > 0)
+{
+  mass_updates(
+    IMAGES_TABLE,
+    array(
+      'primary' => array('id'),
+      'update' => array('width', 'height', 'filesize'),
+      ),
+    $updates
+    );
+}
+
+echo
+"\n"
+. $upgrade_description.sprintf(' (execution in %.3fs)', (get_moment() - $starttime))
+."\n"
+;
+?>
\ No newline at end of file