diff --git a/wp-includes/class-feed.php b/wp-includes/class-feed.php
index 8245287e7..4b9f29ae2 100644
--- a/wp-includes/class-feed.php
+++ b/wp-includes/class-feed.php
@@ -1,6 +1,6 @@
 <?php
 
-require_once (ABSPATH . WPINC . '/simplepie.inc');
+require_once (ABSPATH . WPINC . '/class-simplepie.php');
 
 class WP_Feed_Cache extends SimplePie_Cache {
 	/**
diff --git a/wp-includes/simplepie.inc b/wp-includes/class-simplepie.php
similarity index 100%
rename from wp-includes/simplepie.inc
rename to wp-includes/class-simplepie.php