diff --git a/src/wp-admin/includes/update-core.php b/src/wp-admin/includes/update-core.php
index d18675b797..f6e83aff26 100644
--- a/src/wp-admin/includes/update-core.php
+++ b/src/wp-admin/includes/update-core.php
@@ -706,6 +706,7 @@ $_old_files = array(
 // 4.6
 'wp-admin/includes/class-wp-automatic-upgrader.php', // Wrong file name, see #37628.
 // 4.7
+'wp-includes/class-feed.php',
 'wp-includes/locale.php',
 'wp-includes/session.php',
 );
diff --git a/src/wp-includes/class-feed.php b/src/wp-includes/class-feed.php
deleted file mode 100644
index 04ceb4d8eb..0000000000
--- a/src/wp-includes/class-feed.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * Feed API
- *
- * @package WordPress
- * @subpackage Feed
- */
-if ( ! class_exists( 'SimplePie', false ) ) {
-	require_once( ABSPATH . WPINC . '/class-simplepie.php' );
-}
-
-require_once( ABSPATH . WPINC . '/class-wp-feed-cache.php' );
-require_once( ABSPATH . WPINC . '/class-wp-feed-cache-transient.php' );
-require_once( ABSPATH . WPINC . '/class-wp-simplepie-file.php' );
-require_once( ABSPATH . WPINC . '/class-wp-simplepie-sanitize-kses.php' );
\ No newline at end of file
diff --git a/src/wp-includes/feed.php b/src/wp-includes/feed.php
index f673e91d8b..d898d9b39b 100644
--- a/src/wp-includes/feed.php
+++ b/src/wp-includes/feed.php
@@ -663,7 +663,13 @@ function feed_content_type( $type = '' ) {
  * @return WP_Error|SimplePie WP_Error object on failure or SimplePie object on success
  */
 function fetch_feed( $url ) {
-	require_once( ABSPATH . WPINC . '/class-feed.php' );
+	if ( ! class_exists( 'SimplePie', false ) ) {
+		require_once( ABSPATH . WPINC . '/class-simplepie.php' );
+	}
+	require_once( ABSPATH . WPINC . '/class-wp-feed-cache.php' );
+	require_once( ABSPATH . WPINC . '/class-wp-feed-cache-transient.php' );
+	require_once( ABSPATH . WPINC . '/class-wp-simplepie-file.php' );
+	require_once( ABSPATH . WPINC . '/class-wp-simplepie-sanitize-kses.php' );
 
 	$feed = new SimplePie();
 
@@ -676,7 +682,7 @@ function fetch_feed( $url ) {
 	$feed->set_file_class( 'WP_SimplePie_File' );
 
 	$feed->set_feed_url( $url );
-	/** This filter is documented in wp-includes/class-feed.php */
+	/** This filter is documented in wp-includes/class-wp-feed-cache-transient.php */
 	$feed->set_cache_duration( apply_filters( 'wp_feed_cache_transient_lifetime', 12 * HOUR_IN_SECONDS, $url ) );
 	/**
 	 * Fires just before processing the SimplePie feed object.