diff --git a/mailpoet/lib/Cron/Workers/InactiveSubscribers.php b/mailpoet/lib/Cron/Workers/InactiveSubscribers.php
index 07c5b43934..1757fd9fab 100644
--- a/mailpoet/lib/Cron/Workers/InactiveSubscribers.php
+++ b/mailpoet/lib/Cron/Workers/InactiveSubscribers.php
@@ -3,11 +3,10 @@
 namespace MailPoet\Cron\Workers;
 
 use MailPoet\Entities\ScheduledTaskEntity;
-use MailPoet\Entities\SubscriberEntity;
 use MailPoet\Settings\SettingsController;
 use MailPoet\Settings\TrackingConfig;
 use MailPoet\Subscribers\InactiveSubscribersController;
-use MailPoetVendor\Doctrine\ORM\EntityManager;
+use MailPoet\Subscribers\SubscribersRepository;
 
 class InactiveSubscribers extends SimpleWorker {
   const TASK_TYPE = 'inactive_subscribers';
@@ -23,19 +22,19 @@ class InactiveSubscribers extends SimpleWorker {
   /** @var TrackingConfig */
   private $trackingConfig;
 
-  /** @var EntityManager */
-  private $entityManager;
+  /** @var SubscribersRepository */
+  private $subscribersRepository;
 
   public function __construct(
     InactiveSubscribersController $inactiveSubscribersController,
     SettingsController $settings,
     TrackingConfig $trackingConfig,
-    EntityManager $entityManager
+    SubscribersRepository $subscribersRepository
   ) {
     $this->inactiveSubscribersController = $inactiveSubscribersController;
     $this->settings = $settings;
     $this->trackingConfig = $trackingConfig;
-    $this->entityManager = $entityManager;
+    $this->subscribersRepository = $subscribersRepository;
     parent::__construct();
   }
 
@@ -58,11 +57,7 @@ class InactiveSubscribers extends SimpleWorker {
     if (isset($meta['max_subscriber_id'])) {
       $maxSubscriberId = $meta['max_subscriber_id'];
     } else {
-      $maxSubscriberId = $this->entityManager->createQueryBuilder()
-        ->select('MAX(s.id)')
-        ->from(SubscriberEntity::class, 's')
-        ->getQuery()
-        ->getSingleScalarResult();
+      $maxSubscriberId = $this->subscribersRepository->getMaxSubscriberId();
     }
 
     while ($lastSubscriberId <= $maxSubscriberId) {
diff --git a/mailpoet/lib/Subscribers/SubscribersRepository.php b/mailpoet/lib/Subscribers/SubscribersRepository.php
index 7c4d21ad56..671d361fa6 100644
--- a/mailpoet/lib/Subscribers/SubscribersRepository.php
+++ b/mailpoet/lib/Subscribers/SubscribersRepository.php
@@ -362,4 +362,14 @@ class SubscribersRepository extends Repository {
       ->getQuery()
       ->getArrayResult();
   }
+
+  public function getMaxSubscriberId(): int {
+    $maxSubscriberId = $this->entityManager->createQueryBuilder()
+      ->select('MAX(s.id)')
+      ->from(SubscriberEntity::class, 's')
+      ->getQuery()
+      ->getSingleScalarResult();
+
+    return is_int($maxSubscriberId) ? $maxSubscriberId : 0;
+  }
 }
diff --git a/mailpoet/tests/integration/Cron/Workers/InactiveSubscribersTest.php b/mailpoet/tests/integration/Cron/Workers/InactiveSubscribersTest.php
index cd1a3c00c6..9f80be18a6 100644
--- a/mailpoet/tests/integration/Cron/Workers/InactiveSubscribersTest.php
+++ b/mailpoet/tests/integration/Cron/Workers/InactiveSubscribersTest.php
@@ -11,6 +11,7 @@ use MailPoet\Newsletter\Sending\ScheduledTasksRepository;
 use MailPoet\Settings\SettingsController;
 use MailPoet\Settings\TrackingConfig;
 use MailPoet\Subscribers\InactiveSubscribersController;
+use MailPoet\Subscribers\SubscribersRepository;
 use MailPoetVendor\Carbon\Carbon;
 
 class InactiveSubscribersTest extends \MailPoetTest {
@@ -22,12 +23,16 @@ class InactiveSubscribersTest extends \MailPoetTest {
   /** @var ScheduledTasksRepository */
   private $scheduledTasksRepository;
 
+  /** @var SubscribersRepository */
+  private $subscribersRepository;
+
   public function _before() {
     $this->settings = SettingsController::getInstance();
     $this->scheduledTasksRepository = $this->diContainer->get(ScheduledTasksRepository::class);
     $this->truncateEntity(ScheduledTaskEntity::class);
     $this->settings->set('tracking.level', TrackingConfig::LEVEL_PARTIAL);
     $this->cronHelper = ContainerWrapper::getInstance()->get(CronHelper::class);
+    $this->subscribersRepository = ContainerWrapper::getInstance()->get(SubscribersRepository::class);
     parent::_before();
   }
 
@@ -39,7 +44,7 @@ class InactiveSubscribersTest extends \MailPoetTest {
       'reactivateInactiveSubscribers' => Stub\Expected::once(),
     ], $this);
 
-    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->entityManager);
+    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->subscribersRepository);
     $worker->processTaskStrategy(new ScheduledTaskEntity(), microtime(true));
 
     $task = $this->scheduledTasksRepository->findOneBy(
@@ -60,7 +65,7 @@ class InactiveSubscribersTest extends \MailPoetTest {
       'reactivateInactiveSubscribers' => Stub\Expected::never(),
     ], $this);
 
-    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->entityManager);
+    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->subscribersRepository);
     $worker->processTaskStrategy(new ScheduledTaskEntity(), microtime(true));
   }
 
@@ -72,7 +77,7 @@ class InactiveSubscribersTest extends \MailPoetTest {
       'reactivateInactiveSubscribers' => Stub\Expected::never(),
     ], $this);
 
-    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->entityManager);
+    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->subscribersRepository);
     $worker->processTaskStrategy(new ScheduledTaskEntity(), microtime(true));
 
     $task = $this->scheduledTasksRepository->findOneBy(
@@ -92,7 +97,7 @@ class InactiveSubscribersTest extends \MailPoetTest {
       'reactivateInactiveSubscribers' => Stub\Expected::never(),
     ], $this);
 
-    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->entityManager);
+    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->subscribersRepository);
     $task = new ScheduledTaskEntity();
     $task->setMeta(['max_subscriber_id' => 2001 /* 3 iterations of BATCH_SIZE in markInactiveSubscribers */]);
     $this->entityManager->persist($task);
@@ -113,7 +118,7 @@ class InactiveSubscribersTest extends \MailPoetTest {
 
     $task = new ScheduledTaskEntity();
 
-    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->entityManager);
+    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->subscribersRepository);
     $worker->processTaskStrategy($task, microtime(true));
 
     $meta = $task->getMeta();
@@ -128,7 +133,7 @@ class InactiveSubscribersTest extends \MailPoetTest {
       'reactivateInactiveSubscribers' => Stub\Expected::never(),
     ], $this);
 
-    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->entityManager);
+    $worker = new InactiveSubscribers($controllerMock, $this->settings, $this->diContainer->get(TrackingConfig::class), $this->subscribersRepository);
     $this->expectException(\Exception::class);
     $this->expectExceptionMessage('Maximum execution time has been reached.');
     $worker->processTaskStrategy(new ScheduledTaskEntity(), microtime(true) - $this->cronHelper->getDaemonExecutionLimit());