diff --git a/core/modules/text/lib/Drupal/text/Tests/Formatter/TextPlainUnitTest.php b/core/modules/text/lib/Drupal/text/Tests/Formatter/TextPlainUnitTest.php
index 0ecec7b..bc76d05 100644
--- a/core/modules/text/lib/Drupal/text/Tests/Formatter/TextPlainUnitTest.php
+++ b/core/modules/text/lib/Drupal/text/Tests/Formatter/TextPlainUnitTest.php
@@ -26,7 +26,7 @@ class TextPlainUnitTest extends DrupalUnitTestBase {
    *
    * @var array
    */
-  public static $modules = array('entity', 'field', 'field_sql_storage', 'text', 'entity_test', 'system');
+  public static $modules = array('entity', 'field', 'field_sql_storage', 'text', 'entity_test', 'system', 'filter');
 
   /**
    * Contains rendered content.