diff --git a/auto_nodetitle.module b/auto_nodetitle.module
index 30e6e4f..0fecd24 100644
--- a/auto_nodetitle.module
+++ b/auto_nodetitle.module
@@ -47,7 +47,15 @@ function auto_nodetitle_form_node_form_alter(&$form, &$form_state, $form_id) {
 function auto_nodetitle_node_submit($node, $form, &$form_state) {
   $setting = auto_nodetitle_get_setting($node->type);
   if ($setting == AUTO_NODETITLE_ENABLED || ($setting == AUTO_NODETITLE_OPTIONAL && empty($form_state['values']['title']))) {
-    auto_nodetitle_set_title($node);
+    // Allow fields to load additional data not available in form data. This is
+    // how node_preview() is doing it too. Use a cloned node so you don't
+    // overwrite new form values.
+    $clone = clone $node;
+
+    _field_invoke_multiple('load', 'node', array($clone->nid => $clone));
+    auto_nodetitle_set_title($clone);
+
+    $node->title = $clone->title;
   }
 }