diff --git a/wp-includes/comment-template.php b/wp-includes/comment-template.php
index e056d7b2db..c4bcf5b640 100644
--- a/wp-includes/comment-template.php
+++ b/wp-includes/comment-template.php
@@ -2425,7 +2425,7 @@ function comment_form( $args = array(), $post_id = null ) {
 
 	$required_text = sprintf(
 		/* translators: %s: Asterisk symbol (*). */
-		' <span class="comment-required-message" aria-hidden="true">' . __( 'Required fields are marked %s' ) . '</span>',
+		' <span class="required-field-message" aria-hidden="true">' . __( 'Required fields are marked %s' ) . '</span>',
 		trim( $required_indicator )
 	);
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index c1d3b801be..c7fd5943cd 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-52199';
+$wp_version = '5.9-alpha-52200';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.