Header Appears in Posts Instead of Front Page

I was wondering why Header is set to appear in Posts page instead of Front page. I was able to change that by modifying the header.php file. I changed the following code

<?php if(is_home() && !get_theme_mod( 'header_banner_visibility' )): ?>
        <div id="page-sub-header" <?php if(has_header_image()) { ?>style="background-image: url('<?php header_image(); ?>');" <?php } ?>>

into

<?php if(is_front_page() && !get_theme_mod( 'header_banner_visibility' )): ?>
        <div id="page-sub-header" <?php if(has_header_image()) { ?>style="background-image: url('<?php header_image(); ?>');" <?php } ?>>

The only problem I have with this is having to re-modify the code every time there is an update. Is their a way to change it without worrying about future updates? Thank you.