diff --git a/core/modules/options/lib/Drupal/options/Plugin/Field/FieldWidget/OptionsWidgetBase.php b/core/modules/options/lib/Drupal/options/Plugin/Field/FieldWidget/OptionsWidgetBase.php
index c23de90..480d30b 100644
--- a/core/modules/options/lib/Drupal/options/Plugin/Field/FieldWidget/OptionsWidgetBase.php
+++ b/core/modules/options/lib/Drupal/options/Plugin/Field/FieldWidget/OptionsWidgetBase.php
@@ -65,6 +65,9 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
     $element['#element_validate'][] = array(get_class($this), 'validateElement');
     $element['#key_column'] = $this->column;
 
+    if ($empty_option = $this->getEmptyOption()) {
+      $element['#properties']['empty_option'] = 'none';
+    }
     // The rest of the $element is built by child method implementations.
 
     return $element;
diff --git a/core/modules/options/lib/Drupal/options/Tests/OptionsWidgetsTest.php b/core/modules/options/lib/Drupal/options/Tests/OptionsWidgetsTest.php
index c0038c2..2527211 100644
--- a/core/modules/options/lib/Drupal/options/Tests/OptionsWidgetsTest.php
+++ b/core/modules/options/lib/Drupal/options/Tests/OptionsWidgetsTest.php
@@ -376,7 +376,8 @@ function testSelectListMultiple() {
     $entity->save();
     $entity_init = clone $entity;
 
-    // Display form: with no field data, nothing is selected.
+    // Display form: with no field data, nothing is selected, except for the
+    // empty option.
     $this->drupalGet('entity_test/manage/' . $entity->id());
     $this->assertOptionSelected("edit-card-2", '_none');
     $this->assertNoOptionSelected('edit-card-2', 0);