diff --git a/core/modules/user/tests/src/Functional/UserPasswordResetTest.php b/core/modules/user/tests/src/Functional/UserPasswordResetTest.php
index b6ab0057d5..e39bf180b4 100644
--- a/core/modules/user/tests/src/Functional/UserPasswordResetTest.php
+++ b/core/modules/user/tests/src/Functional/UserPasswordResetTest.php
@@ -244,6 +244,11 @@ public function testUserPasswordResetPreferredLanguage($setPreferredLangcode, $a
     $this->assertLanguagePrefixResetUrl($visitingUrl, $expectedResetUrl, $unexpectedResetUrl);
   }
 
+  /**
+   * Data provider for testUserPasswordResetPreferredLanguage().
+   *
+   * @return array
+   */
   public function languagePrefixTestProvider() {
     return [
       'Test language prefix set as \'\', visiting default with preferred language as en' => [