Index: includes/form.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/form.inc,v
retrieving revision 1.174.2.11
diff -u -u -r1.174.2.11 form.inc
--- includes/form.inc	26 Jul 2007 19:16:45 -0000	1.174.2.11
+++ includes/form.inc	3 Nov 2007 13:01:06 -0000
@@ -1219,9 +1219,9 @@
 /**
  * Validates the date type to stop dates like February 30, 2006.
  */
-function date_validate($form) {
-  if (!checkdate($form['#value']['month'], $form['#value']['day'], $form['#value']['year'])) {
-    form_error($form, t('The specified date is invalid.'));
+function date_validate($element) {
+  if (!checkdate($element['#value']['month'], $element['#value']['day'], $element['#value']['year'])) {
+    form_error($element, t('The specified date is invalid.'));
   }
 }