Index: trunk/kernel/units/visits/visits_config.php
===================================================================
diff -u -N -r7391 -r7867
--- trunk/kernel/units/visits/visits_config.php	(.../visits_config.php)	(revision 7391)
+++ trunk/kernel/units/visits/visits_config.php	(.../visits_config.php)	(revision 7867)
@@ -92,7 +92,7 @@
 															),
 
 					'Fields' => Array(
-										'VisitId' => Array('type' => 'int'),
+										'VisitId' => Array('type' => 'int', 'not_null' => 1, 'default' => 0),
 										'VisitDate' => Array('type' => 'int', 'formatter'=>'kDateFormatter', 'custom_filter' => 'date_range', 'not_null' => '1','default' => '0'),
 										'Referer' => Array('type' => 'string','not_null' => '1','default' => ''),
             							'IPAddress' => Array('type' => 'string','not_null' => '1','default' => ''),