diff --git nodeformcols.module nodeformcols.module
index b27f9b5..1556aa2 100644
--- nodeformcols.module
+++ nodeformcols.module
@@ -175,7 +175,7 @@ function template_preprocess_node_form(&$aVars) {
  */
 function nodeformcols_node_type_delete($info) {
   $result = db_select('variable')
-    ->condition('name', 'nodeformscols_field_placements_' . $info->old_type . '%', 'LIKE')
+    ->condition('name', 'nodeformscols_field_placements_' . $info->orig_type . '%', 'LIKE')
     ->fields('variable', array('name'))
     ->execute();
   foreach ($result as $row) {
@@ -187,8 +187,8 @@ function nodeformcols_node_type_delete($info) {
  * Implementation of hook_node_type_update().
  */
 function nodeformcols_node_type_update($info) {
-  if (!empty($info->old_type) && $info->old_type != $info->type) {
-    $base = 'nodeformscols_field_placements_' . $info->old_type;
+  if (!empty($info->orig_type) && $info->orig_type != $info->type) {
+    $base = 'nodeformscols_field_placements_' . $info->orig_type;
     $new_base = 'nodeformscols_field_placements_' . $info->type;
     $result = db_select('variable')
       ->condition('name', $base . '%', 'LIKE')