diff --git a/wp-includes/default-filters.php b/wp-includes/default-filters.php
index ad0f47b69a..b64869ec91 100644
--- a/wp-includes/default-filters.php
+++ b/wp-includes/default-filters.php
@@ -160,19 +160,19 @@ add_filter( 'the_title_rss',      'strip_tags'                    );
 add_filter( 'the_title_rss',      'ent2ncr',                    8 );
 add_filter( 'the_title_rss',      'esc_html'                      );
 add_filter( 'the_content_rss',    'ent2ncr',                    8 );
-add_filter( 'the_content_feed',   '_wp_staticize_emoji_for_feeds' );
+add_filter( 'the_content_feed',   'wp_staticize_emoji'            );
 add_filter( 'the_excerpt_rss',    'convert_chars'                 );
 add_filter( 'the_excerpt_rss',    'ent2ncr',                    8 );
 add_filter( 'comment_author_rss', 'ent2ncr',                    8 );
 add_filter( 'comment_text_rss',   'ent2ncr',                    8 );
 add_filter( 'comment_text_rss',   'esc_html'                      );
-add_filter( 'comment_text_rss',   '_wp_staticize_emoji_for_feeds' );
+add_filter( 'comment_text_rss',   'wp_staticize_emoji'            );
 add_filter( 'bloginfo_rss',       'ent2ncr',                    8 );
 add_filter( 'the_author',         'ent2ncr',                    8 );
 add_filter( 'the_guid',           'esc_url'                       );
 
 // Email filters
-add_filter( 'wp_mail', '_wp_staticize_emoji_for_email' );
+add_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
 
 // Misc filters
 add_filter( 'option_ping_sites',        'privacy_ping_filter'                 );
diff --git a/wp-includes/feed.php b/wp-includes/feed.php
index dc26188d12..8638554146 100644
--- a/wp-includes/feed.php
+++ b/wp-includes/feed.php
@@ -649,16 +649,3 @@ function fetch_feed( $url ) {
 
 	return $feed;
 }
-
-/**
- * Convert emoji characters in a feed into static images.
- *
- * @ignore
- * @since 4.2.0
- *
- * @param string $content The content to convert.
- * @return The converted content.
- */
-function _wp_staticize_emoji_for_feeds( $content ) {
-	return wp_staticize_emoji( $content, true );
-}
diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 793c6383ad..c37755515e 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -4236,10 +4236,6 @@ function wp_encode_emoji( $content ) {
 function wp_staticize_emoji( $text ) {
 	$text = wp_encode_emoji( $text );
 
-	if ( ! class_exists( 'DOMDocument' ) ) {
-		return $text;
-	}
-
 	/** This filter is documented in wp-includes/formatting.php */
 	$cdn_url = apply_filters( 'emoji_url', set_url_scheme( '//s.w.org/images/core/emoji/72x72/' ) );
 
@@ -4314,13 +4310,12 @@ function wp_staticize_emoji( $text ) {
 /**
  * Convert emoji in emails into static images.
  *
- * @ignore
  * @since 4.2.0
  *
  * @param array $mail The email data array.
  * @return array The email data array, with emoji in the message staticized.
  */
-function _wp_staticize_emoji_for_email( $mail ) {
+function wp_staticize_emoji_for_email( $mail ) {
 	if ( ! isset( $mail['message'] ) ) {
 		return $mail;
 	}
@@ -4373,7 +4368,7 @@ function _wp_staticize_emoji_for_email( $mail ) {
 	$content_type = apply_filters( 'wp_mail_content_type', $content_type );
 
 	if ( 'text/html' === $content_type ) {
-		$mail['message'] = wp_staticize_emoji( $mail['message'], true );
+		$mail['message'] = wp_staticize_emoji( $mail['message'] );
 	}
 
 	return $mail;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index a407bf58f5..db7eb70880 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-RC1-32152';
+$wp_version = '4.2-RC1-32161';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.