Dont’t change active Button while I’m listing a category?

Okay, I did it this way::

add_filter('nav_menu_css_class' , 'special_nav_class' , 10 , 2);
function special_nav_class($classes, $item){
     if(is_category() && $item->title == "Blog"){ //Notice you can change the conditional from is_single() and $item->title
             $classes[] = "special-class";
     }
     return $classes;
}