diff --git a/core/modules/config/config.admin.inc b/core/modules/config/config.admin.inc
index a961286..f403c8c 100644
--- a/core/modules/config/config.admin.inc
+++ b/core/modules/config/config.admin.inc
@@ -45,7 +45,7 @@ function config_admin_sync_form(array &$form, array &$form_state, StorageInterfa
   }
   else {
     // Store the comparer for use in the submit.
-    $form_state['storage_comparer'] = $config_comparer;
+    $form_state['config_comparer'] = $config_comparer;
   }
 
   // Add the AJAX library to the form for dialog support.
@@ -132,7 +132,7 @@ function config_admin_import_form($form, &$form_state) {
  */
 function config_admin_import_form_submit($form, &$form_state) {
   $config_importer = new ConfigImporter(
-    $form_state['storage_comparer'],
+    $form_state['config_comparer'],
     Drupal::service('event_dispatcher'),
     Drupal::service('config.factory'),
     Drupal::entityManager(),