diff --git a/wp-admin/includes/dashboard.php b/wp-admin/includes/dashboard.php
index b0631ff28b..2d10b06429 100644
--- a/wp-admin/includes/dashboard.php
+++ b/wp-admin/includes/dashboard.php
@@ -629,7 +629,7 @@ function _wp_dashboard_recent_comments_row( &$comment, $show_date = true ) {
 
 ?>
 
-		<div id="comment-<?php echo $comment->comment_ID; ?>" <?php comment_class( array( 'comment-item', wp_get_comment_status( $comment ) ) ); ?>>
+		<div id="comment-<?php echo $comment->comment_ID; ?>" <?php comment_class( array( 'comment-item', wp_get_comment_status( $comment ) ), $comment ); ?>>
 
 			<?php echo get_avatar( $comment, 50, 'mystery' ); ?>
 
diff --git a/wp-includes/class-walker-comment.php b/wp-includes/class-walker-comment.php
index 4d10278c9d..c8c379961b 100644
--- a/wp-includes/class-walker-comment.php
+++ b/wp-includes/class-walker-comment.php
@@ -227,7 +227,7 @@ class Walker_Comment extends Walker {
 	protected function ping( $comment, $depth, $args ) {
 		$tag = ( 'div' == $args['style'] ) ? 'div' : 'li';
 ?>
-		<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class(); ?>>
+		<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( '', $comment ); ?>>
 			<div class="comment-body">
 				<?php _e( 'Pingback:' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( 'Edit' ), '<span class="edit-link">', '</span>' ); ?>
 			</div>
@@ -255,7 +255,7 @@ class Walker_Comment extends Walker {
 			$add_below = 'div-comment';
 		}
 ?>
-		<<?php echo $tag; ?> <?php comment_class( $this->has_children ? 'parent' : '' ); ?> id="comment-<?php comment_ID(); ?>">
+		<<?php echo $tag; ?> <?php comment_class( $this->has_children ? 'parent' : '', $comment ); ?> id="comment-<?php comment_ID(); ?>">
 		<?php if ( 'div' != $args['style'] ) : ?>
 		<div id="div-comment-<?php comment_ID(); ?>" class="comment-body">
 		<?php endif; ?>
@@ -308,7 +308,7 @@ class Walker_Comment extends Walker {
 	protected function html5_comment( $comment, $depth, $args ) {
 		$tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
 ?>
-		<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( $this->has_children ? 'parent' : '' ); ?>>
+		<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( $this->has_children ? 'parent' : '', $comment ); ?>>
 			<article id="div-comment-<?php comment_ID(); ?>" class="comment-body">
 				<footer class="comment-meta">
 					<div class="comment-author vcard">
diff --git a/wp-includes/version.php b/wp-includes/version.php
index db89e33d25..56098056aa 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34039';
+$wp_version = '4.4-alpha-34040';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.