diff --git a/mailpoet/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php b/mailpoet/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php
index 4d5d0980ba..782dc9bc88 100644
--- a/mailpoet/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php
+++ b/mailpoet/tests/integration/Cron/Workers/SendingQueue/SendingQueueTest.php
@@ -19,6 +19,7 @@ use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Entities\NewsletterLinkEntity;
 use MailPoet\Entities\NewsletterSegmentEntity;
 use MailPoet\Entities\ScheduledTaskEntity;
+use MailPoet\Entities\ScheduledTaskSubscriberEntity;
 use MailPoet\Entities\SegmentEntity;
 use MailPoet\Entities\SendingQueueEntity;
 use MailPoet\Entities\SubscriberEntity;
@@ -30,7 +31,6 @@ use MailPoet\Mailer\SubscriberError;
 use MailPoet\Models\Newsletter;
 use MailPoet\Models\NewsletterSegment;
 use MailPoet\Models\ScheduledTask;
-use MailPoet\Models\ScheduledTaskSubscriber;
 use MailPoet\Models\Segment;
 use MailPoet\Models\SendingQueue;
 use MailPoet\Models\StatisticsNewsletters;
@@ -476,9 +476,9 @@ class SendingQueueTest extends \MailPoetTest {
     verify($scheduledTask->getStatus())->equals(SendingQueue::STATUS_COMPLETED);
 
     // queue subscriber processed/to process count is updated
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))
       ->arrayCount(0);
-    $processedSubscribers = $scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED);
+    $processedSubscribers = $scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED);
     verify($processedSubscribers)->equals([$this->subscriber]);
     verify($sendingQueue->getCountTotal())->equals(1);
     verify($sendingQueue->getCountProcessed())->equals(1);
@@ -610,9 +610,9 @@ class SendingQueueTest extends \MailPoetTest {
     verify($scheduledTask->getStatus())->equals(SendingQueue::STATUS_COMPLETED);
 
     // queue subscriber processed/to process count is updated
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))
       ->arrayCount(0);
-    $processedSubscribers = $scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED);
+    $processedSubscribers = $scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED);
     verify($processedSubscribers)->equals([$this->subscriber]);
     verify($sendingQueue->getCountTotal())->equals(1);
     verify($sendingQueue->getCountProcessed())->equals(1);
@@ -659,9 +659,9 @@ class SendingQueueTest extends \MailPoetTest {
     verify($updatedNewsletter->getSentAt())->equalsWithDelta($scheduledTask->getProcessedAt(), 1);
 
     // queue subscriber processed/to process count is updated
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))
       ->arrayCount(0);
-    $processedSubscribers = $scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED);
+    $processedSubscribers = $scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED);
     verify($processedSubscribers)->equals([$this->subscriber]);
     verify($sendingQueue->getCountTotal())->equals(1);
     verify($sendingQueue->getCountProcessed())->equals(1);
@@ -737,8 +737,8 @@ class SendingQueueTest extends \MailPoetTest {
     // compare data after first sending
     $this->sendingQueuesRepository->refresh($sendingQueue);
     $this->scheduledTasksRepository->refresh($scheduledTask);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))->equals([$this->subscriber]);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))->equals([$wrongSubscriber]);
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))->equals([$this->subscriber]);
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))->equals([$wrongSubscriber]);
     verify($sendingQueue->getCountTotal())->equals(2);
     verify($sendingQueue->getCountProcessed())->equals(1);
     verify($sendingQueue->getCountToProcess())->equals(1);
@@ -755,8 +755,8 @@ class SendingQueueTest extends \MailPoetTest {
     // load queue and compare data after second sending
     $this->sendingQueuesRepository->refresh($sendingQueue);
     $this->scheduledTasksRepository->refresh($scheduledTask);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))->equals([]);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))->equals([$this->subscriber, $wrongSubscriber]);
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))->equals([]);
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))->equals([$this->subscriber, $wrongSubscriber]);
     verify($sendingQueue->getCountTotal())->equals(2);
     verify($sendingQueue->getCountProcessed())->equals(2);
     verify($sendingQueue->getCountToProcess())->equals(0);
@@ -818,9 +818,9 @@ class SendingQueueTest extends \MailPoetTest {
     verify($scheduledTask->getStatus())->equals(SendingQueue::STATUS_COMPLETED);
 
     // queue subscriber processed/to process count is updated
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))
       ->equals([]);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))
       ->equals([$this->subscriber]);
     verify($sendingQueue->getCountTotal())->equals(1);
     verify($sendingQueue->getCountProcessed())->equals(1);
@@ -860,7 +860,7 @@ class SendingQueueTest extends \MailPoetTest {
     $this->sendingQueuesRepository->refresh($sendingQueue);
     $this->scheduledTasksRepository->refresh($scheduledTask);
 
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))
       ->equals([]);
     verify($sendingQueue->getCountTotal())->equals(0);
     verify($sendingQueue->getCountProcessed())->equals(0);
@@ -899,7 +899,7 @@ class SendingQueueTest extends \MailPoetTest {
     $this->scheduledTasksRepository->refresh($scheduledTask);
 
     // Unprocessable subscribers were removed
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))
       ->equals([$this->subscriber]); // subscriber that should be processed
     verify($sendingQueue->getCountTotal())->equals(1);
     verify($sendingQueue->getCountProcessed())->equals(1);
@@ -934,9 +934,9 @@ class SendingQueueTest extends \MailPoetTest {
     $this->sendingQueuesRepository->refresh($sendingQueue);
     $this->scheduledTasksRepository->refresh($scheduledTask);
     // queue subscriber processed/to process count is updated
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))
       ->equals([]);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))
       ->equals([$this->subscriber]);
     verify($sendingQueue->getCountTotal())->equals(1);
     verify($sendingQueue->getCountProcessed())->equals(1);
@@ -977,9 +977,9 @@ class SendingQueueTest extends \MailPoetTest {
     $this->sendingQueuesRepository->refresh($sendingQueue);
     $this->scheduledTasksRepository->refresh($scheduledTask);
     // queue subscriber processed/to process count is updated
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))
       ->equals([]);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))
       ->equals([$this->subscriber]);
     verify($sendingQueue->getCountTotal())->equals(1);
     verify($sendingQueue->getCountProcessed())->equals(1);
@@ -1010,9 +1010,9 @@ class SendingQueueTest extends \MailPoetTest {
     $this->sendingQueuesRepository->refresh($sendingQueue);
     $this->scheduledTasksRepository->refresh($scheduledTask);
     // queue subscriber processed/to process count is updated
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_UNPROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_UNPROCESSED))
       ->equals([]);
-    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriber::STATUS_PROCESSED))
+    verify($scheduledTask->getSubscribersByProcessed(ScheduledTaskSubscriberEntity::STATUS_PROCESSED))
       ->equals([]);
     verify($sendingQueue->getCountTotal())->equals(0);
     verify($sendingQueue->getCountProcessed())->equals(0);