diff --git a/wcfsetup/install/files/lib/http/Helper.class.php b/wcfsetup/install/files/lib/http/Helper.class.php
index bbe5856a4e..f604dee041 100644
--- a/wcfsetup/install/files/lib/http/Helper.class.php
+++ b/wcfsetup/install/files/lib/http/Helper.class.php
@@ -171,7 +171,7 @@ public static function mapApiParameters(ServerRequestInterface $request, string
      * field name.
      *
      * @template T
-     * @param string-string<T> $className
+     * @param class-string<T> $className
      * @return T
      * @throws UserInputException
      * @since 6.1