Index: patterns/components/system.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/patterns/components/system.inc,v
retrieving revision 1.1.2.2.2.12
diff -u -p -r1.1.2.2.2.12 system.inc
--- patterns/components/system.inc	14 May 2009 11:24:45 -0000	1.1.2.2.2.12
+++ patterns/components/system.inc	26 Jul 2009 11:52:09 -0000
@@ -86,7 +86,7 @@ function system_patterns($op, $id = null
         	for($i=0;$i<count($data);$i++) {
         		$item = &$data[$i];
 
-            if (!$item['value'] && !$item['delete']) {
+            if (! isset($item['value']) && !$item['delete']) {
             	$value = $item;
               unset($value['name']);
               $item = array('name' => $item['name'], 'value' => $value);