how to disable comment url ?

hi – i use this code in function.php . comment url disabled but Can’t type comment! Typing is disabled
please help me to disable comment url

add_filter('comment_form_default_fields', 'unset_url_field');
function unset_url_field($fields){
    if(isset($fields['url']))
       unset($fields['url']);
       return $fields;
}

• This topic was modified 6 years, 1 month ago by roz21.
• This topic was modified 6 years, 1 month ago by roz21.