diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 2ed1791a48..86080d677d 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -2657,7 +2657,9 @@ function wp_widgets_add_menu() {
  * @since 2.2.0
  */
 function wp_ob_end_flush_all() {
-	while ( @ob_end_flush() );
+	$levels = ob_get_level(); 
+	for ($i=0; $i<$levels; $i++) 
+		ob_end_flush(); 
 }
 
 /**