diff --git a/app/code/Magento/Cron/Model/ResourceModel/Schedule.php b/app/code/Magento/Cron/Model/ResourceModel/Schedule.php
index 120e0ce6432c5..87f9d5cef02ec 100644
--- a/app/code/Magento/Cron/Model/ResourceModel/Schedule.php
+++ b/app/code/Magento/Cron/Model/ResourceModel/Schedule.php
@@ -18,7 +18,7 @@ class Schedule extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb
      *
      * @return void
      */
-    public function _construct()
+    protected function _construct()
     {
         $this->_init('cron_schedule', 'schedule_id');
     }