Archive.php / page.php displaying home page

In my wp permanent links i have changed to: /%category%/%postname%/
And in my category base to: .

For some reason, in my archive.php or page.php is showing my home page.
Here’s my code (its the same for archive and page):

<?php get_header(); ?>
<div class="container">

	<section id="category-posts">
		<?php
		add_filter( 'the_title', 'max_title_length');
		while (have_posts()) : the_post(); ?>
		<div class="category-posts">
			<a href="<?php the_permalink() ?>" title="<?php the_title(); ?>">
				<?php the_post_thumbnail('category-thumb'); ?>
				<h2><?php the_title(); ?></h2>
				<?php the_excerpt(); ?>
				<h3><?php echo "Publicado em: " . get_the_date( get_option('date_format') ) . " | " . get_the_author(); ?></h3>
			</a>
		</div>
		<?php endwhile; remove_filter( 'the_title', 'max_title_length'); ?>
	</section>

	<aside id="right-sidebar">
		<?php dynamic_sidebar( 'right_sidebar' ); ?>
	</aside>

<?php get_footer(); ?>

Any ideas?