diff --git a/Classes/Domain/Model/News.php b/Classes/Domain/Model/News.php
index 75327d73f..a01f75500 100644
--- a/Classes/Domain/Model/News.php
+++ b/Classes/Domain/Model/News.php
@@ -35,7 +35,7 @@ class News extends AbstractEntity
     /** @var \DateTime */
     protected $starttime;
 
-    /** @var \DateTime */
+    /** @var ?\DateTime */
     protected $endtime;
 
     /**
@@ -1179,7 +1179,7 @@ public function getEndtime(): ?DateTime
      *
      * @param DateTime $endtime end time
      */
-    public function setEndtime(DateTime $endtime): void
+    public function setEndtime($endtime): void
     {
         $this->endtime = $endtime;
     }