diff --git a/application/views/helpers/MainDetail.php b/application/views/helpers/MainDetail.php
deleted file mode 100644
index 28c021381..000000000
--- a/application/views/helpers/MainDetail.php
+++ /dev/null
@@ -1,104 +0,0 @@
-<?php
-// @codingStandardsIgnoreStart
-
-// {{{ICINGA_LICENSE_HEADER}}}
-/**
- * This file is part of Icinga Web 2.
- *
- * Icinga Web 2 - Head for multiple monitoring backends.
- * Copyright (C) 2013 Icinga Development Team
- *
- * 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; either version 2
- * of the License, or (at your option) any later version.
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- *
- * @copyright  2013 Icinga Development Team <info@icinga.org>
- * @license    http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
- * @author     Icinga Development Team <info@icinga.org>
- *
- */
-// {{{ICINGA_LICENSE_HEADER}}}
-
-/**
- * Helper to render main and detail contents into a container
- */
-use Icinga\Application\Icinga;
-
-class Zend_View_Helper_MainDetail extends Zend_View_Helper_Abstract
-{
-    /**
-     * HTML template
-     *
-     * @var string
-     */
-    private static $tpl = <<<'EOT'
-    <div id='icingamain' class='{{MAIN_CLASS}}'>
-        {{MAIN_CONTENT}}
-    </div>
-
-    <p id="icingadetailClose" align="right" class="hidden">
-        <a
-            rel="tooltip"
-            title="Close"
-            class="button btn-common btn-small"
-        >
-            <i class="icinga-icon-remove"></i>
-        </a>
-    </p>
-    <div id='icingadetail' class='{{DETAIL_CLASS}}'>
-        {{DETAIL_CONTENT}}
-    </div>
-EOT;
-
-    /**
-     * Css class map when detail pane is expanded
-     *
-     * @var array
-     */
-    private static $expanded = array(
-        'xs'    => 12,
-        'sm'    => 12,
-        'md'    => 12,
-        'lg'    => 5
-    );
-
-    /**
-     * Content render function
-     *
-     * @param   string  $mainContent    HTML for main
-     * @param   string  $detailContent  HTML for detail
-     *
-     * @return  string                  HTML all together
-     */
-    public function mainDetail($mainContent, $detailContent = '')
-    {
-        $detailCls = 'hidden';
-        $mainCls = 'col-md-12 col-lg-12 col-xs-12 col-sm-12';
-
-        if ($detailContent != '') {
-            $detailCls = '';
-            $mainCls = '';
-            foreach (self::$expanded as $type => $size) {
-                $detailCls .= 'col-' . $type . '-' . ($size == 12 ? 'push-' : '') . $size . ' ';
-                $mainCls .= 'col-' . $type . '-' . ($size == 12 ? 'pull-' : '') . ($size < 12 ? (12-$size) : 12). ' ';
-            }
-        }
-
-        $html = str_replace('{{MAIN_CLASS}}', $mainCls, self::$tpl);
-        $html = str_replace('{{DETAIL_CLASS}}', $detailCls, $html);
-        $html = str_replace('{{MAIN_CONTENT}}', $mainContent, $html);
-        $html = str_replace('{{DETAIL_CONTENT}}', $detailContent, $html);
-        return $html;
-    }
-}
-// @codingStandardsIgnoreEnd