diff --git a/wp-includes/blocks/latest-comments.php b/wp-includes/blocks/latest-comments.php
index 44a3dce8ae..80fa24be25 100644
--- a/wp-includes/blocks/latest-comments.php
+++ b/wp-includes/blocks/latest-comments.php
@@ -5,7 +5,7 @@
  * @package WordPress
  */
 
-if ( ! function_exists( 'gutenberg_draft_or_post_title' ) ) {
+if ( ! function_exists( 'wp_latest_comments_draft_or_post_title' ) ) {
 	/**
 	 * Get the post title.
 	 *
@@ -26,7 +26,7 @@ if ( ! function_exists( 'gutenberg_draft_or_post_title' ) ) {
 	 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
 	 * @return string The post title if set; "(no title)" if no title is set.
 	 */
-	function wp_latest_comments_draft_or_post_title( $post = 0 ) {
+	function gutenberg_draft_or_post_title( $post = 0 ) {
 		$title = get_the_title( $post );
 		if ( empty( $title ) ) {
 			$title = __( '(no title)' );
@@ -42,7 +42,7 @@ if ( ! function_exists( 'gutenberg_draft_or_post_title' ) ) {
  *
  * @return string Returns the post content with latest comments added.
  */
-function render_block_core_latest_comments( $attributes = array() ) {
+function gutenberg_render_block_core_latest_comments( $attributes = array() ) {
 	// This filter is documented in wp-includes/widgets/class-wp-widget-recent-comments.php.
 	$comments = get_comments(
 		apply_filters(
@@ -94,7 +94,7 @@ function render_block_core_latest_comments( $attributes = array() ) {
 
 			// `_draft_or_post_title` calls `esc_html()` so we don't need to wrap that call in
 			// `esc_html`.
-			$post_title = '<a class="wp-block-latest-comments__comment-link" href="' . esc_url( get_comment_link( $comment ) ) . '">' . wp_latest_comments_draft_or_post_title( $comment->comment_post_ID ) . '</a>';
+			$post_title = '<a class="wp-block-latest-comments__comment-link" href="' . esc_url( get_comment_link( $comment ) ) . '">' . gutenberg_draft_or_post_title( $comment->comment_post_ID ) . '</a>';
 
 			$list_items_markup .= sprintf(
 				/* translators: 1: author name (inside <a> or <span> tag, based on if they have a URL), 2: post title related to this comment */
@@ -179,6 +179,6 @@ register_block_type(
 				'enum' => array( 'center', 'left', 'right', 'wide', 'full', '' ),
 			),
 		),
-		'render_callback' => 'render_block_core_latest_comments',
+		'render_callback' => 'gutenberg_render_block_core_latest_comments',
 	)
 );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d6f1fe0023..898f9c4c19 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-RC1-43950';
+$wp_version = '5.0-RC1-43951';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.