diff --git a/setup/manageheader.php b/setup/manageheader.php
index 9020f20e5f..44f1debe5b 100644
--- a/setup/manageheader.php
+++ b/setup/manageheader.php
@@ -32,6 +32,7 @@
 
 	function check_form_values()
 	{
+		$errors = '';
 		@reset($GLOBALS['HTTP_POST_VARS']['domains']);
 		while(list($k,$v) = @each($GLOBALS['HTTP_POST_VARS']['domains']))
 		{