diff --git a/webform_matrix_component.module b/webform_matrix_component.module
index 247ff35..f7dc71b 100644
--- a/webform_matrix_component.module
+++ b/webform_matrix_component.module
@@ -273,6 +273,9 @@ function webform_matrix_component_form_alter(&$form, &$form_state, $form_id) {
                         '#theme_wrappers' => array('webform_element'),
                         '#element_validate' => array('webform_validate_date'),
                         '#datepicker' => $datepicker,
+                        '#reference_timestamp' => NULL,
+                        '#exclude' => array(),
+                        '#webform_component' => array('cid' => $cid, 'type' => 'date'),
                     );
                     break;