diff --git a/core/modules/entity_reference/entity_reference.module b/core/modules/entity_reference/entity_reference.module
index 459f12d..9fe8c3e 100644
--- a/core/modules/entity_reference/entity_reference.module
+++ b/core/modules/entity_reference/entity_reference.module
@@ -15,7 +15,7 @@
  */
 function entity_reference_field_info() {
   $field_info['entity_reference'] = array(
-    'label' => t('Entity Reference'),
+    'label' => t('Reference'),
     'description' => t('This field references another entity.'),
     'settings' => array(
       // Default to a primary entity type (i.e. node or user).
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/entity_reference/selection/SelectionBase.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/entity_reference/selection/SelectionBase.php
index 4706824..c4b4778 100644
--- a/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/entity_reference/selection/SelectionBase.php
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Plugin/entity_reference/selection/SelectionBase.php
@@ -97,7 +97,8 @@ public static function settingsForm(&$field, &$instance) {
         '#type' => 'checkboxes',
         '#title' => $target_bundles_title,
         '#options' => $bundle_options,
-        '#default_value' => (!empty($instance['settings']['handler_settings']['target_bundles'])) ? $instance['settings']['handler_settings']['target_bundles'] : array_keys($bundle_options),
+        '#default_value' => (!empty($instance['settings']['handler_settings']['target_bundles'])) ? $instance['settings']['handler_settings']['target_bundles'] : NULL,
+        '#required' => TRUE,
         '#size' => 6,
         '#multiple' => TRUE,
         '#element_validate' => array('_entity_reference_element_validate_filter'),