previous post link Hel p excluding categories

Hi guys, all the times I have problem I come to this forums and find the answer, but now I hasn`t so I post my problem.

I want to exclude a category from previous_post_link, I add the excluded_categories, and it works, but the text is replaced with excluded categories, here is the code for better understanding.

Single.php
Original code
<?php previous_post_link('&laquo; %link'); ?>

Changed code:
<?php previous_post_link('&laquo; %link', 'excluded_categories', '23'); ?>

Result in the site:

? excluded_categories excluded_categories ?

Can you help me please???