Pagination "first" and "last" links, have i done something wrong?

[eluser]Rubiz'[/eluser]
My pagination cannot contain First and Last words, so I tried to change it

Code:

$config['first_link']     = 'esimene';
$config['last_link']      = 'viimane';

Than, I initialize de pagination and other configs are well right.

It shouldnt config this way?????