diff --git a/app/code/Magento/Cron/Model/Config/Backend/Product/Alert.php b/app/code/Magento/Cron/Model/Config/Backend/Product/Alert.php
index eeef291fb6ad1..0039e629b735c 100644
--- a/app/code/Magento/Cron/Model/Config/Backend/Product/Alert.php
+++ b/app/code/Magento/Cron/Model/Config/Backend/Product/Alert.php
@@ -17,12 +17,12 @@
 class Alert extends \Magento\Framework\App\Config\Value
 {
     /**
-     * Cron string path
+     * Cron expression config path
      */
     const CRON_STRING_PATH = 'crontab/default/jobs/catalog_product_alert/schedule/cron_expr';
 
     /**
-     * Cron model path
+     * Cron model config path
      */
     const CRON_MODEL_PATH = 'crontab/default/jobs/catalog_product_alert/run/model';
 
@@ -71,8 +71,16 @@ public function __construct(
      */
     public function afterSave()
     {
-        $time = $this->getData('groups/productalert_cron/fields/time/value');
-        $frequency = $this->getData('groups/productalert_cron/fields/frequency/value');
+        $time = $this->getData('groups/productalert_cron/fields/time/value') ?:
+            explode(
+                ',',
+                $this->_config->getValue(
+                    'catalog/productalert_cron/time',
+                    $this->getScope(),
+                    $this->getScopeId()
+                ) ?: '0,0,0'
+            );
+        $frequency = $this->getValue();
 
         $cronExprArray = [
             (int)$time[1], //Minute
@@ -102,6 +110,7 @@ public function afterSave()
                 self::CRON_MODEL_PATH
             )->save();
         } catch (\Exception $e) {
+            // phpcs:ignore Magento2.Exceptions.DirectThrow
             throw new \Exception(__('We can\'t save the cron expression.'));
         }
 
diff --git a/dev/tests/integration/testsuite/Magento/Cron/Model/Config/Backend/Product/AlertTest.php b/dev/tests/integration/testsuite/Magento/Cron/Model/Config/Backend/Product/AlertTest.php
new file mode 100644
index 0000000000000..31d3506c1e6d7
--- /dev/null
+++ b/dev/tests/integration/testsuite/Magento/Cron/Model/Config/Backend/Product/AlertTest.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Cron\Model\Config\Backend\Product;
+
+use Magento\Config\Model\Config as ConfigModel;
+use Magento\Config\Model\PreparedValueFactory;
+use Magento\Cron\Model\Config\Source\Frequency;
+use Magento\Framework\App\Config\ValueFactory;
+use Magento\Framework\ObjectManagerInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @magentoAppArea adminhtml
+ */
+class AlertTest extends TestCase
+{
+    /**
+     * @var ObjectManagerInterface
+     */
+    private $objectManager;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp(): void
+    {
+        $this->objectManager = Bootstrap::getObjectManager();
+    }
+
+    /**
+     * @dataProvider frequencyDataProvider
+     * @param string $frequency
+     * @param string $expectedCronExpr
+     */
+    public function testDirectSave(string $frequency, string $expectedCronExpr): void
+    {
+        $preparedValueFactory = $this->objectManager->get(PreparedValueFactory::class);
+        /** @var Alert $sitemapValue */
+        $alertValue = $preparedValueFactory->create('catalog/productalert_cron/frequency', $frequency, 'default', 0);
+        $alertValue->save();
+
+        self::assertEquals($expectedCronExpr, $this->getCronExpression());
+    }
+
+    /**
+     * @dataProvider frequencyDataProvider
+     * @param string $frequency
+     * @param string $expectedCronExpr
+     */
+    public function testSaveFromAdmin(string $frequency, string $expectedCronExpr): void
+    {
+        $config = $this->objectManager->create(ConfigModel::class);
+        $config->setSection('catalog');
+        $config->setGroups(
+            [
+                'productalert_cron' => [
+                    'fields' => [
+                        'time' => ['value' => ['00', '00', '00']],
+                        'frequency' => ['value' => $frequency],
+                    ],
+                ],
+            ]
+        );
+        $config->save();
+
+        self::assertEquals($expectedCronExpr, $this->getCronExpression());
+    }
+
+    /**
+     * @return array
+     */
+    public function frequencyDataProvider(): array
+    {
+        return [
+            'daily' => [Frequency::CRON_DAILY, '0 0 * * *'],
+            'weekly' => [Frequency::CRON_WEEKLY, '0 0 * * 1'],
+            'monthly' => [Frequency::CRON_MONTHLY, '0 0 1 * *'],
+        ];
+    }
+
+    /**
+     * @return string
+     */
+    private function getCronExpression(): string
+    {
+        $valueFactory = $this->objectManager->get(ValueFactory::class);
+        $cronExprValue = $valueFactory->create()
+            ->load(Alert::CRON_STRING_PATH, 'path');
+
+        return $cronExprValue->getValue();
+    }
+}