Paypal Import module setup error.

We get PHP the following error message when trying to run Paypal import setup for the first time:
Parse error: syntax error, unexpected '!', expecting '(' in /home/cexpert2/faces.cexpert.com/modules/import_paypal/paypal_setup.php on line 23
Looking at the source file I can see the following at line 23:
//-------------------------------------------------------------------------------------------------
if !defined('refresh_sys_prefs') {
    function refresh_sys_prefs()
    {
        flush_dir(company_path().'/js_cache'); // clear cache
        unset($_SESSION['SysPrefs']);
        get_company_prefs();
    }
}

function can_process()
{
    return true;
}

Can someone please advise?