diff --git a/tests/integration/Cron/Workers/SchedulerTest.php b/tests/integration/Cron/Workers/SchedulerTest.php
index 8cca1e3abf..dbea036c8f 100644
--- a/tests/integration/Cron/Workers/SchedulerTest.php
+++ b/tests/integration/Cron/Workers/SchedulerTest.php
@@ -609,7 +609,7 @@ class SchedulerTest extends \MailPoetTest {
     $task = ScheduledTask::createOrUpdate([
       'type' => 'bounce',
       'status' => ScheduledTask::STATUS_SCHEDULED,
-      'scheduled_at' => Carbon::createFromTimestamp(WPFunctions::get()->currentTime('timestamp'))->addMinute(5),
+      'scheduled_at' => Carbon::createFromTimestamp(WPFunctions::get()->currentTime('timestamp'))->addMinutes(5),
     ]);
     $newsletter = $this->_createNewsletter(Newsletter::TYPE_STANDARD, Newsletter::STATUS_DRAFT);
     $queue = $this->_createQueue($newsletter->id);
@@ -641,7 +641,7 @@ class SchedulerTest extends \MailPoetTest {
     $task = SendingTask::create();
     $task->newsletterId = $newsletter->id;
     $task->status = SendingQueue::STATUS_SCHEDULED;
-    $task->scheduledAt = Carbon::now()->subDay(1)->toDateTimeString();
+    $task->scheduledAt = Carbon::now()->subDay()->toDateTimeString();
     $task->setSubscribers([$subscriber->id]);
     $task->save();
 
@@ -664,7 +664,7 @@ class SchedulerTest extends \MailPoetTest {
     $task = SendingTask::create();
     $task->newsletterId = $newsletter->id;
     $task->status = SendingQueue::STATUS_SCHEDULED;
-    $task->scheduledAt = Carbon::now()->subDay(1)->toDateTimeString();
+    $task->scheduledAt = Carbon::now()->subDay()->toDateTimeString();
     $task->setSubscribers([$subscriber->id]);
     $task->save();
     $subscriber->delete();
@@ -695,7 +695,7 @@ class SchedulerTest extends \MailPoetTest {
     $task = SendingTask::create();
     $task->newsletterId = $newsletter->id;
     $task->status = SendingQueue::STATUS_SCHEDULED;
-    $task->scheduledAt = Carbon::now()->subDay(1)->toDateTimeString();
+    $task->scheduledAt = Carbon::now()->subDay()->toDateTimeString();
     $task->save();
 
     // scheduled task should exist
diff --git a/tests/integration/Logging/LogHandlerTest.php b/tests/integration/Logging/LogHandlerTest.php
index a4ab572802..9d317f5a86 100644
--- a/tests/integration/Logging/LogHandlerTest.php
+++ b/tests/integration/Logging/LogHandlerTest.php
@@ -29,7 +29,7 @@ class LogHandlerTest extends \MailPoetTest {
       'name' => 'old name',
       'level' => '5',
       'message' => 'xyz',
-      'created_at' => Carbon::create()->subDays(100)->toDateTimeString(),
+      'created_at' => Carbon::now()->subDays(100)->toDateTimeString(),
     ]);
     $model->save();
     $random = function() {
@@ -51,11 +51,13 @@ class LogHandlerTest extends \MailPoetTest {
 
   public function testItNotPurgesOldLogs() {
     $model = Log::create();
+    $date = Carbon::create();
+    assert($date instanceof Carbon);
     $model->hydrate([
       'name' => 'old name keep',
       'level' => '5',
       'message' => 'xyz',
-      'created_at' => Carbon::create()->subDays(100)->toDateTimeString(),
+      'created_at' => $date->subDays(100)->toDateTimeString(),
     ]);
     $model->save();
     $random = function() {
diff --git a/tests/integration/Subscription/PagesTest.php b/tests/integration/Subscription/PagesTest.php
index 1ab0539cb9..716c192ab7 100644
--- a/tests/integration/Subscription/PagesTest.php
+++ b/tests/integration/Subscription/PagesTest.php
@@ -54,8 +54,8 @@ class PagesTest extends \MailPoetTest {
     $subscription->confirm();
     $confirmedSubscriber = Subscriber::findOne($this->subscriber->id);
     expect($confirmedSubscriber->status)->equals(Subscriber::STATUS_SUBSCRIBED);
-    expect($confirmedSubscriber->lastSubscribedAt)->greaterOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->subSecond(1));
-    expect($confirmedSubscriber->lastSubscribedAt)->lessOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->addSecond(1));
+    expect($confirmedSubscriber->lastSubscribedAt)->greaterOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->subSecond());
+    expect($confirmedSubscriber->lastSubscribedAt)->lessOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->addSecond());
   }
 
   public function testItUpdatesSubscriptionOnDuplicateAttemptButDoesntSendNotification() {
@@ -72,10 +72,10 @@ class PagesTest extends \MailPoetTest {
     $subscription->confirm();
     $confirmedSubscriber = Subscriber::findOne($this->subscriber->id);
     expect($confirmedSubscriber->status)->equals(Subscriber::STATUS_SUBSCRIBED);
-    expect($confirmedSubscriber->confirmedAt)->greaterOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->subSecond(1));
-    expect($confirmedSubscriber->confirmedAt)->lessOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->addSecond(1));
-    expect($confirmedSubscriber->lastSubscribedAt)->greaterOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->subSecond(1));
-    expect($confirmedSubscriber->lastSubscribedAt)->lessOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->addSecond(1));
+    expect($confirmedSubscriber->confirmedAt)->greaterOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->subSecond());
+    expect($confirmedSubscriber->confirmedAt)->lessOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->addSecond());
+    expect($confirmedSubscriber->lastSubscribedAt)->greaterOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->subSecond());
+    expect($confirmedSubscriber->lastSubscribedAt)->lessOrEquals(Carbon::createFromTimestamp((int)current_time('timestamp'))->addSecond());
     expect($confirmedSubscriber->firstName)->equals('Updated first name');
   }