Index: domain_source/domain_source.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/domain/domain_source/domain_source.module,v
retrieving revision 1.14
diff -u -r1.14 domain_source.module
--- domain_source/domain_source.module	11 Oct 2009 15:19:57 -0000	1.14
+++ domain_source/domain_source.module	14 Oct 2009 21:21:50 -0000
@@ -60,7 +60,7 @@
         '#type' => 'select',
         '#title' => t('Source domain'),
         '#options' => $options,
-        '#default_value' => ($form['#node']->domain_source) ? $form['#node']->domain_source : $_domain['domain_id'],
+        '#default_value' => isset($form['#node']->domain_source) ? $form['#node']->domain_source : $_domain['domain_id'],
         '#description' => t('This affiliate will be used to write links to this content from other affiliates, as needed.')
       );
     }