diff --git a/library/Zend/Validator/File/IsCompressed.php b/library/Zend/Validator/File/IsCompressed.php
index ccb2ae47440..34bdf669284 100644
--- a/library/Zend/Validator/File/IsCompressed.php
+++ b/library/Zend/Validator/File/IsCompressed.php
@@ -40,7 +40,7 @@ class IsCompressed extends MimeType
      */
     public function __construct($options = array())
     {
-        // http://de.wikipedia.org/wiki/Liste_von_Dateiendungen
+        // http://hul.harvard.edu/ois/systems/wax/wax-public-help/mimetypes.htm
         $default = array(
             'application/arj',
             'application/gnutar',
diff --git a/library/Zend/Validator/File/IsImage.php b/library/Zend/Validator/File/IsImage.php
index 3b10b39cd95..20fa6c80261 100644
--- a/library/Zend/Validator/File/IsImage.php
+++ b/library/Zend/Validator/File/IsImage.php
@@ -40,8 +40,7 @@ class IsImage extends MimeType
      */
     public function __construct($options = array())
     {
-        // http://de.wikipedia.org/wiki/Liste_von_Dateiendungen
-        // http://www.iana.org/assignments/media-types/image/
+        // http://www.iana.org/assignments/media-types/media-types.xhtml#image
         $default = array(
             'application/cdf',
             'application/dicom',