diff --git a/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
index 34c8c94..c1b6590 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
@@ -136,6 +136,9 @@ public function testLanguageUpgrade() {
 
     $translation_string = db_query("SELECT * FROM {locales_target} WHERE lid = 22 AND language = 'ca'")->fetchObject();
     $this->assertEqual($translation_string->translation, implode(LOCALE_PLURAL_DELIMITER, array('1 byte', '@count bytes')));
+
+    // Ensure that re-indexing the search does not fail.
+    search_reindex();
   }
 
   /**