Deny referrer using map directive

[Dewangga]

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Hello!

I have a map directive like this :

map $http_referer $badboys {
        hostnames;
        default         0;
        "~*hitleap.com" 1;
}

and already defined on server block like this :

server {
.. skip ..
 if ($badboys) {
	return 406;
 }

.. skip ..

}

but, if I tried to access them using given referral, still got HTTP 200.
$ curl -I https://domain.name -L -e hitleap.com | grep 200
  % Total    % Received % Xferd  Average Speed   Time    Time     Time
 Current
                                 Dload  Upload   Total   Spent    Left
 Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:--
- --:--:--     0
HTTP/1.1 200 OK


Is there any additional configuration needed?
Any help will be appreciated :)
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