diff --git a/phpgwapi/inc/horde/Horde/iCalendar/vevent.php b/phpgwapi/inc/horde/Horde/iCalendar/vevent.php
index 3dd520ca62..093ad0ecf2 100644
--- a/phpgwapi/inc/horde/Horde/iCalendar/vevent.php
+++ b/phpgwapi/inc/horde/Horde/iCalendar/vevent.php
@@ -25,9 +25,11 @@ class Horde_iCalendar_vevent extends Horde_iCalendar {
         // Default values.
         $requiredAttributes = array();
         $requiredAttributes['DTSTAMP'] = time();
+        /* This is handled by the upper layers.
         $requiredAttributes['UID'] = $this->_exportDateTime(time())
             . substr(str_pad(base_convert(microtime(), 10, 36), 16, uniqid(mt_rand()), STR_PAD_LEFT), -16)
             . '@' . (isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost');
+        */
 
         $method = !empty($this->_container) ?
             $this->_container->getAttribute('METHOD') : 'PUBLISH';