diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceAutocomplete.php b/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceAutocomplete.php
index 08a5252..cf1059d 100644
--- a/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceAutocomplete.php
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/EntityReferenceAutocomplete.php
@@ -11,6 +11,7 @@
 use Drupal\Core\Entity\EntityManagerInterface;
 use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\entity_reference\Plugin\Type\SelectionPluginManager;
+use Drupal\field\FieldInstanceConfigInterface;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 
 /**
@@ -85,7 +86,12 @@ public function getMatches(FieldDefinitionInterface $field_definition, $entity_t
 
     if (isset($string)) {
       // Get an array of matching entities.
-      $widget = entity_get_form_display($entity_type, $field_definition->bundle, 'default')->getComponent($field_definition->getName());
+      if ($field_definition instanceof FieldInstanceConfigInterface) {
+        $widget = $field_definition->getDisplayOptions('form');
+      }
+      else {
+        $widget = entity_get_form_display($entity_type, $field_definition->bundle, 'default')->getComponent($field_definition->getName());
+      }
       $match_operator = !empty($widget['settings']['match_operator']) ? $widget['settings']['match_operator'] : 'CONTAINS';
       $entity_labels = $handler->getReferenceableEntities($string, $match_operator, 10);