diff --git a/system/Filters/Cors.php b/system/Filters/Cors.php
index 2c2d805c2d74..9a9bbb208152 100644
--- a/system/Filters/Cors.php
+++ b/system/Filters/Cors.php
@@ -48,7 +48,7 @@ public function __construct(array $config = [])
     /**
      * @param list<string>|null $arguments
      *
-     * @return ResponseInterface|string|null
+     * @return ResponseInterface|null
      */
     public function before(RequestInterface $request, $arguments = null)
     {