diff --git a/src/Illuminate/Bus/Queueable.php b/src/Illuminate/Bus/Queueable.php
index a7d306a89ba3..6813363e39f3 100644
--- a/src/Illuminate/Bus/Queueable.php
+++ b/src/Illuminate/Bus/Queueable.php
@@ -54,7 +54,7 @@ public function onQueue($queue)
     /**
      * Set the desired delay for the job.
      *
-     * @param  int|null  $delay
+     * @param  \DateTime|int|null  $delay
      * @return $this
      */
     public function delay($delay)