Category page and pagination

Hello,
i am facing with huge problem. I created category.php with my own code. Everything is working fine except pagination for category.php . On all other pages same code works but not here, it gives on page/2/ 404 error.

<?php

$current_page = (get_query_var('paged')) ? get_query_var('paged') : 1; // get current page number
$args = array(
  'posts_per_page' => 5, // the value from Settings > Reading by default
  'paged'          => $current_page // current page
);
query_posts( $args );

$wp_query->is_archive = true;
$wp_query->is_home = true;

?>

                     <div class="custom-pager">
                    <?php
                    if( function_exists('wp_pagenavi') ) wp_pagenavi(); // WP-PageNavi function

                    ?> <div class="clearfix"></div>
                      </div>

<?php 

while(have_posts()): the_post();
  ?>

                <section class="vesti-box">
                  <div class="row">
                    <div class="col-md-5 col-sm-4">
                        <a href="<?php echo get_permalink(); ?>">

                        <span class="img-holder">

<?php if ( get_field( 'naslovna_slika_vesti' ) ): ?>
             <?php
                $attachment_id = get_field('naslovna_slika_vesti');
                $size = "newslistingImage"; // (thumbnail, medium, large, full or custom size)
                $image2 = wp_get_attachment_image_src( $attachment_id, $size );

              ?>
               <img src="<?php echo $image2[0]; ?>" alt="Управа за аграрна пла?а?а " class="img-responsive">
<?php else: ?>

               <img src="<?php echo get_template_directory_uri(); ?>/img/bg/placeholder.jpg" alt="Управа за аграрна пла?а?а " class="img-responsive">
<?php endif; ?>

                        </span></a>
                    </div>
                    <div class="col-md-7 col-sm-8 nopadding">
                        <h4><a href="<?php echo get_permalink(); ?>"><?php the_title(''); ?></a></h4>
                        <small><i class="fa fa-clock-o"></i> Об?ав?ено: <strong><?php the_time('j. F Y.') ?></strong></small>
                        <div class="news-txt">
                          <?php my_excerpt('bigshort');?>
                        </div>
                         <a href="<?php echo get_permalink(); ?>" class="detailed-red">Дета?ни?е</a>
                    </div>
                  </div>
                </section>

                    <?php
                    endwhile;
                    ?>

                     <div class="custom-pager">
                    <?php
                    if( function_exists('wp_pagenavi') ) wp_pagenavi(); // WP-PageNavi function

                    ?>
                      </div>

              </div>