Get current category posts

Hi! ??
I’m using the shortcode in archive.php to display the list of posts.
The problem is that whatever category page i’m on, I get all of the posts.

How can I limit the ajax load more query to only the current category posts ?

Here’s my code

<?php if (have_posts()) : ?>

    <?php echo do_shortcode('[ajax_load_more container_type="div" css_classes="row" post_type="post" posts_per_page="3" category="" scroll_distance="300" transition="fade" transition_container="false" progress_bar="false" progress_bar_color="15A3C6" button_label="Charger d\'autres articles" button_loading_label="Chargement..."]'); ?>  

<?php endif; ?>

Thank you