diff --git a/lib/Db/Feed.php b/lib/Db/Feed.php
index c07873cd1..229a31c06 100644
--- a/lib/Db/Feed.php
+++ b/lib/Db/Feed.php
@@ -663,7 +663,7 @@ public function setUserId(string $userId): Feed
     /**
      * @param int $nextUpdateTime
      */
-    public function setNextUpdateTime(int $nextUpdateTime): void
+    public function setNextUpdateTime(?int $nextUpdateTime): void
     {
         $this->nextUpdateTime = $nextUpdateTime;
         $this->markFieldUpdated('nextUpdateTime');