diff --git a/calendar/setup/tables_update.inc.php b/calendar/setup/tables_update.inc.php
index 67fdb13955..ee9301c92a 100644
--- a/calendar/setup/tables_update.inc.php
+++ b/calendar/setup/tables_update.inc.php
@@ -896,8 +896,7 @@ function calendar_upgrade0_9_13_005()
 
 	$GLOBALS['egw_setup']->oProc->AlterColumn('phpgw_cal','category',array('type' => 'varchar', 'precision' => 30,'nullable' => True));
 
-	@reset($calendar_data);
-	while($calendar_data && list($cal_id,$category) = each($calendar_data))
+	foreach($calendar_data as $cal_id => $category)
 	{
 		$GLOBALS['egw_setup']->oProc->query("UPDATE phpgw_cal SET category='".$category."' WHERE cal_id=".$cal_id,__LINE__,__FILE__);
 	}