diff --git a/core/modules/entity_reference/entity_reference.module b/core/modules/entity_reference/entity_reference.module
index e44cc32..66bf548 100644
--- a/core/modules/entity_reference/entity_reference.module
+++ b/core/modules/entity_reference/entity_reference.module
@@ -18,13 +18,12 @@ function entity_reference_field_info_alter(&$info) {
   // Make the entity reference field configurable.
   $info['entity_reference']['configurable'] = TRUE;
   $info['entity_reference']['class'] = '\Drupal\entity_reference\ConfigurableEntityReferenceItem';
-  $info['entity_reference']['list_class'] = '\Drupal\Core\Field\ConfigFieldItemList';
+  $info['entity_reference']['list_class'] = '\Drupal\entity_reference\Plugin\Field\FieldType\ConfigurableEntityReferenceFieldItemList';
   $info['entity_reference']['settings']['target_type'] = \Drupal::moduleHandler()->moduleExists('node') ? 'node' : 'user';
   $info['entity_reference']['instance_settings']['handler'] = 'default';
   $info['entity_reference']['instance_settings']['handler_settings'] = array();
   $info['entity_reference']['default_widget'] = 'entity_reference_autocomplete';
   $info['entity_reference']['default_formatter'] = 'entity_reference_label';
-  $info['entity_reference']['list_class'] = '\Drupal\entity_reference\Plugin\Field\FieldType\ConfigurableEntityReferenceFieldItemList';
   $info['entity_reference']['provider'] = 'entity_reference';
 }