diff --git a/wp-includes/default-filters.php b/wp-includes/default-filters.php
index 6247e3124e..7effbf8f6e 100644
--- a/wp-includes/default-filters.php
+++ b/wp-includes/default-filters.php
@@ -76,7 +76,7 @@ foreach ( $filters as $filter ) {
 
 // Format strings for display.
 $filters = array('comment_author', 'term_name', 'link_name', 'link_description',
-	'link_notes', 'bloginfo', 'wp_title');
+	'link_notes', 'bloginfo', 'wp_title', 'widget_title');
 foreach ( $filters as $filter ) {
 	add_filter($filter, 'wptexturize');
 	add_filter($filter, 'convert_chars');