Index: fivestar_field.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/fivestar/fivestar_field.inc,v
retrieving revision 1.1.4.28
diff -u -r1.1.4.28 fivestar_field.inc
--- fivestar_field.inc	11 Apr 2009 05:21:58 -0000	1.1.4.28
+++ fivestar_field.inc	29 Apr 2009 20:40:21 -0000
@@ -188,7 +188,7 @@
       $form['allow_clear'] = array(
         '#type' => 'checkbox',
         '#title' => t('Allow user to clear value'),
-        '#default_value' => $widget['allow_clear'] ? $widget['allow_clear'] : 1,
+        '#default_value' => isset($widget['allow_clear']) ? $widget['allow_clear'] : 1,
       );
       return $form;
     case 'save':