WordPress pagination issues(going back to page 1)

I’m having some trouble with the pagination on my WordPress blog. It’s work perfectly fine, the only thing is that it won’t go back to page 1. I can go to page 2, 3, 4 and back. The only page I can’t navigate back to is page 1. Does this sound familiar to anyone?

Much thanks in advance!

This is what generates the pagination:

<?php
    global $wp_query;

    echo paginate_links( array(
        'format' => '/blog/page/%#%',
        'end_size' => 10,
        'current' => 0,     
            'total' => $wp_query->max_num_pages
    ) );
?>