diff --git a/data/LanguageNameIndexer.php b/data/LanguageNameIndexer.php
index f1d7ac49..6ff457fb 100644
--- a/data/LanguageNameIndexer.php
+++ b/data/LanguageNameIndexer.php
@@ -24,6 +24,7 @@ if ( $IP === false ) {
 }
 require_once "$IP/maintenance/Maintenance.php";
 
+use MediaWiki\Extension\CLDR\LanguageNames;
 use MediaWiki\Languages\LanguageNameUtils;
 use MediaWiki\MediaWikiServices;
 
diff --git a/tests/phpunit/LanguageSearchTest.php b/tests/phpunit/LanguageSearchTest.php
index e73fef0d..32b93e1d 100644
--- a/tests/phpunit/LanguageSearchTest.php
+++ b/tests/phpunit/LanguageSearchTest.php
@@ -18,6 +18,8 @@
  * @license MIT
  */
 
+use MediaWiki\Extension\CLDR\LanguageNames;
+
 /**
  * @covers \LanguageNameSearch
  * @covers \LanguageNameSearchData