diff --git a/src/wp-includes/class-http.php b/src/wp-includes/class-http.php
index 99b20a941a..c802f7faef 100644
--- a/src/wp-includes/class-http.php
+++ b/src/wp-includes/class-http.php
@@ -458,7 +458,7 @@ class WP_Http {
 	 *
 	 * @param string            $location URL to redirect to.
 	 * @param array             $headers  Headers for the redirect.
-	 * @param mixed             $data     The data to add to the cache.
+	 * @param string|array      $data     Body to send with the request.
 	 * @param array             $options  Redirect request options.
 	 * @param Requests_Response $original Response object.
 	 */