diff --git a/components/date.inc b/components/date.inc
index e379c04..9b75551 100644
--- a/components/date.inc
+++ b/components/date.inc
@@ -167,6 +167,7 @@ function webform_expand_date($element) {
     $timestring = webform_strtodate('c', $element['#default_value'], $timezone);
     $element['#default_value'] = webform_date_array($timestring, 'date');
   }
+  unset($element['#value']);
 
   // Set defaults according to existing #default_value (set by Form API)
   if (isset($element['#default_value']['month']) || isset($element['#default_value']['day']) || isset($element['#default_value']['year'])) {