Index: wp-includes/functions.php
===================================================================
--- wp-includes/functions.php	(revision 4952)
+++ wp-includes/functions.php	(working copy)
@@ -909,9 +909,9 @@
 		$text = 'Gone';
 
 	if ( version_compare(phpversion(), '4.3.0', '>=') )
-		@header("HTTP/1.1 $header $text", true, $header);
+		@header($_SERVER["SERVER_PROTOCOL"]." $header $text", true, $header);
 	else
-		@header("HTTP/1.1 $header $text");
+		@header($_SERVER["SERVER_PROTOCOL"]." $header $text");
 }
 
 function nocache_headers() {