diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php
index d01c6c3..53b78c4 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\migrate_drupal\Tests\d6;
 
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
 
@@ -65,6 +66,15 @@ protected function setUp() {
       'entity_type' => 'node',
       'name' => 'tags',
       'type' => 'taxonomy_term_reference',
+      'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
+      'settings' => array(
+        'allowed_values' => array(
+          array(
+            'vocabulary' => 'tags',
+            'parent' => 0,
+          ),
+        ),
+      ),
     ))->save();
 
     $migration = entity_load('migration', 'd6_vocabulary_field_instance');