Index: wp-content/themes/twentyfifteen/index.php
===================================================================
--- wp-content/themes/twentyfifteen/index.php	(revision 30297)
+++ wp-content/themes/twentyfifteen/index.php	(working copy)
@@ -24,7 +24,7 @@
 
 			<?php if ( is_home() && ! is_front_page() ) : ?>
 				<header>
-					<h1 class="page-title screen-reader-text"><?php echo esc_html( get_the_title( get_option( 'page_for_posts' ) ) ); ?></h1>
+					<h1 class="page-title screen-reader-text"><?php single_post_title(); ?></h1>
 				</header>
 			<?php endif; ?>