Index: includes/form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.174.2.6
diff -u -p -r1.174.2.6 form.inc
--- includes/form.inc	9 Mar 2007 04:05:35 -0000	1.174.2.6
+++ includes/form.inc	2 Apr 2007 16:40:20 -0000
@@ -1186,7 +1186,7 @@ function theme_date($element) {
  */
 function expand_date($element) {
   // Default to current date
-  if (!isset($element['#value'])) {
+  if (empty($element['#value'])) {
     $element['#value'] = array('day' => format_date(time(), 'custom', 'j'),
                             'month' => format_date(time(), 'custom', 'n'),
                             'year' => format_date(time(), 'custom', 'Y'));