diff --git a/wp-includes/default-filters.php b/wp-includes/default-filters.php
index e5dd1807b1..ee8200e9fe 100644
--- a/wp-includes/default-filters.php
+++ b/wp-includes/default-filters.php
@@ -141,7 +141,6 @@ add_filter('bloginfo_rss', 'ent2ncr', 8);
 add_filter('the_author', 'ent2ncr', 8);
 
 // Misc filters
-add_filter('option_ping_sites', 'privacy_ping_filter');
 add_filter('option_blog_charset', 'wp_specialchars');
 
 // Actions
diff --git a/wp-includes/pluggable-functions.php b/wp-includes/pluggable-functions.php
index 2c9dbc0cde..af734c02b6 100644
--- a/wp-includes/pluggable-functions.php
+++ b/wp-includes/pluggable-functions.php
@@ -511,4 +511,4 @@ function wp_hash($data) {
 }
 endif;
 
-?>
+?>
\ No newline at end of file