diff --git a/header.inc.php3 b/header.inc.php3
index 99ab5baf7..e9cbb6a71 100755
--- a/header.inc.php3
+++ b/header.inc.php3
@@ -152,7 +152,7 @@ $title     .= (empty($title) ? '' : ' - ') . 'phpMyAdmin ' . PMA_VERSION;
 <script type="text/javascript" language="javascript">
 <!--
 // Updates the title of the frameset if possible (ns4 does not allow this)
-if (typeof(parent.document) != 'undefined' && typeof(parent.document) == 'unknown'
+if (typeof(parent.document) != 'undefined' && typeof(parent.document) != 'unknown'
     && typeof(parent.document.title) == 'string') {
     parent.document.title = '<?php echo $title; ?>';
 }