--- a/web/lib/Zend/Validate/Isbn.php	Thu Mar 21 17:31:31 2013 +0100
+++ b/web/lib/Zend/Validate/Isbn.php	Thu Mar 21 19:50:53 2013 +0100
@@ -14,9 +14,9 @@
  *
  * @category   Zend
  * @package    Zend_Validate
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
- * @version    $Id: Isbn.php 22668 2010-07-25 14:50:46Z thomas $
+ * @version    $Id: Isbn.php 24593 2012-01-05 20:35:02Z matthew $
  */
 
 /**
@@ -27,7 +27,7 @@
 /**
  * @category   Zend
  * @package    Zend_Validate
- * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Validate_Isbn extends Zend_Validate_Abstract
@@ -45,7 +45,7 @@
      */
     protected $_messageTemplates = array(
         self::INVALID => "Invalid type given. String or integer expected",
-        self::NO_ISBN => "'%value%' is no valid ISBN number",
+        self::NO_ISBN => "'%value%' is not a valid ISBN number",
     );
 
     /**