diff --git a/panelizer.module b/panelizer.module
index 2bb730c..a903101 100644
--- a/panelizer.module
+++ b/panelizer.module
@@ -697,6 +697,7 @@ function panelizer_export_save_callback(&$object) {
  * export.inc callback to properly export a panelizer default.
  */
 function panelizer_export_export_callback($object, $indent) {
+  $object->did = NULL;
   $output = ctools_export_object('panelizer_defaults', $object, $indent);
   $output .= panels_export_display($object->display, $indent);
   $output .= $indent . '$panelizer->display = $display;' . "\n";