private function removeRsfhrParam($ref)
	{
		$session = \System::getContainer()->get('session');
		if (!$session->isStarted()) {
			return;
		}

		$referrerSession = $session->get('referer');
		if (!empty($referrerSession[$ref]['current'])) {
			$referrerSession[$ref]['current'] = preg_replace('(([&?])rsfhr=1(&|$))', '$1', $referrerSession[$ref]['current']);
			$session->set('referer', $referrerSession);
		}
	}