diff --git a/sites/all/modules/paddle/workbench_moderation/workbench_moderation.module b/sites/all/modules/paddle/workbench_moderation/workbench_moderation.module
index 653025e..6022bfe 100644
--- a/sites/all/modules/paddle/workbench_moderation/workbench_moderation.module
+++ b/sites/all/modules/paddle/workbench_moderation/workbench_moderation.module
@@ -1569,7 +1569,9 @@ function workbench_moderation_moderate($node, $state) {
   // - If we are moving to unpublished state we should make sure the published
   //   revision is the 'current' revision.
   if (!empty($node->workbench_moderation['published']) || !empty($node->workbench_moderation['current']->unpublishing)) {
-    drupal_register_shutdown_function('workbench_moderation_store', $node);
+    // Clone the node to make sure our data arrives intact in the shutdown
+    // function. It might still be altered before the shutdown is reached.
+    drupal_register_shutdown_function('workbench_moderation_store', clone $node);
   }
 
   // Notify other modules that the state was changed.