diff --git a/wp-content/themes/twentythirteen/404.php b/wp-content/themes/twentythirteen/404.php
index 8a57e7fe4e..b19b468af5 100644
--- a/wp-content/themes/twentythirteen/404.php
+++ b/wp-content/themes/twentythirteen/404.php
@@ -14,7 +14,7 @@ get_header(); ?>
 
 			<header class="page-header">
 				<h1 class="page-title"><?php _e( 'Not found', 'twentythirteen' ); ?></h1>
-			</header><!-- .page-header -->
+			</header>
 
 			<div class="page-wrapper">
 				<div class="page-content">
diff --git a/wp-content/themes/twentythirteen/comments.php b/wp-content/themes/twentythirteen/comments.php
index d55711831b..a7eab05965 100644
--- a/wp-content/themes/twentythirteen/comments.php
+++ b/wp-content/themes/twentythirteen/comments.php
@@ -48,7 +48,7 @@ if ( post_password_required() )
 			<h1 class="screen-reader-text section-heading"><?php _e( 'Comment navigation', 'twentythirteen' ); ?></h1>
 			<div class="nav-previous"><?php previous_comments_link( __( '&larr; Older Comments', 'twentythirteen' ) ); ?></div>
 			<div class="nav-next"><?php next_comments_link( __( 'Newer Comments &rarr;', 'twentythirteen' ) ); ?></div>
-		</nav>
+		</nav><!-- .comment-navigation -->
 		<?php endif; // Check for comment navigation ?>
 
 		<?php if ( ! comments_open() && get_comments_number() ) : ?>
diff --git a/wp-content/themes/twentythirteen/content-link.php b/wp-content/themes/twentythirteen/content-link.php
index ab355199f3..151e373249 100644
--- a/wp-content/themes/twentythirteen/content-link.php
+++ b/wp-content/themes/twentythirteen/content-link.php
@@ -31,6 +31,6 @@
 		<?php if ( get_the_author_meta( 'description' ) && is_multi_author() ) : ?>
 			<?php get_template_part( 'author-bio' ); ?>
 		<?php endif; ?>
-	</footer>
+	</footer><!-- .entry-meta -->
 	<?php endif; // is_single() ?>
 </article><!-- #post -->
diff --git a/wp-content/themes/twentythirteen/content-none.php b/wp-content/themes/twentythirteen/content-none.php
index 1d0a890716..469798a6e0 100644
--- a/wp-content/themes/twentythirteen/content-none.php
+++ b/wp-content/themes/twentythirteen/content-none.php
@@ -10,7 +10,7 @@
 
 <header class="page-header">
 	<h1 class="page-title"><?php _e( 'Nothing Found', 'twentythirteen' ); ?></h1>
-</header><!-- .page-header -->
+</header>
 
 <div class="page-content">
 	<?php if ( is_home() && current_user_can( 'publish_posts' ) ) : ?>
diff --git a/wp-content/themes/twentythirteen/sidebar-main.php b/wp-content/themes/twentythirteen/sidebar-main.php
index 5706e14ca8..bb6034c2a6 100644
--- a/wp-content/themes/twentythirteen/sidebar-main.php
+++ b/wp-content/themes/twentythirteen/sidebar-main.php
@@ -13,6 +13,6 @@ if ( is_active_sidebar( 'sidebar-1' ) ) : ?>
 	<div id="secondary" class="sidebar-container" role="complementary">
 		<div class="widget-area">
 			<?php dynamic_sidebar( 'sidebar-1' ); ?>
-		</div>
+		</div><!-- .widget-area -->
 	</div><!-- #secondary -->
 <?php endif; ?>
\ No newline at end of file
diff --git a/wp-content/themes/twentythirteen/sidebar.php b/wp-content/themes/twentythirteen/sidebar.php
index 1cff1d2566..750945ccca 100644
--- a/wp-content/themes/twentythirteen/sidebar.php
+++ b/wp-content/themes/twentythirteen/sidebar.php
@@ -14,7 +14,7 @@ if ( is_active_sidebar( 'sidebar-2' ) ) : ?>
 		<div class="sidebar-inner">
 			<div class="widget-area">
 				<?php dynamic_sidebar( 'sidebar-2' ); ?>
-			</div>
-		</div>
+			</div><!-- .widget-area -->
+		</div><!-- .sidebar-inner -->
 	</div><!-- #tertiary -->
 <?php endif; ?>
\ No newline at end of file