Index: trunk/core/kernel/db/dblist.php
===================================================================
diff -u -r4287 -r4899
--- trunk/core/kernel/db/dblist.php	(.../dblist.php)	(revision 4287)
+++ trunk/core/kernel/db/dblist.php	(.../dblist.php)	(revision 4899)
@@ -557,8 +557,7 @@
 			$field = 'l'.$lang.'_'.$field;
 		}
 
-		if( !isset($this->Fields[$field]) )
-		{
+		if (!isset($this->Fields[$field]) && ($field != 'RAND()')) {
 			trigger_error('<span class="debug_error">Incorrect sorting</span> defined (field = <b>'.$field.'</b>; direction = <b>'.$direction.'</b>) in config for prefix <b>'.$this->Prefix.'</b>', E_USER_WARNING);
 		}