Thread:Project:Support desk/$wgWhitelistRead don't work in Spanish

I'm wanting put the "Main Page" out of the restrictions with the path $wgWhitelistRead but don't is working. The other pages are working in normally.

The language is Spanish.

I used all this codes but doesn't work:

$wgWhitelistRead = array ("Página_Principal","Special:Userlogin","Ayuda:Ayuda","-");

$wgWhitelistRead = array ("Página Principal","Special:Userlogin","Ayuda:Ayuda","-");

$wgWhitelistRead = array ("Main_Page","Special:Userlogin","Ayuda:Ayuda","-");

$wgWhitelistRead = array ("Main Page","Special:Userlogin","Ayuda:Ayuda","-");

$wgWhitelistRead = array ("P%C3%A1gina_Principal","Special:Userlogin","Ayuda:Ayuda","-");

The problem is on the "Página Principal" only.

Someone know the solution for this problem? Please!

Thanks'