Index: wp-includes/pluggable.php
===================================================================
--- wp-includes/pluggable.php	(revision 18815)
+++ wp-includes/pluggable.php	(working copy)
@@ -877,7 +877,7 @@
  * @return string redirect-sanitized URL
  **/
 function wp_sanitize_redirect($location) {
-	$location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!]|i', '', $location);
+	$location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!@]|i', '', $location);
 	$location = wp_kses_no_null($location);
 
 	// remove %0d and %0a from location