diff --git a/mailpoet/tests/integration/Newsletter/Blocks/AbandonedCartContentTest.php b/mailpoet/tests/integration/Newsletter/Blocks/AbandonedCartContentTest.php
index dd019ccda4..a2b3dba23b 100644
--- a/mailpoet/tests/integration/Newsletter/Blocks/AbandonedCartContentTest.php
+++ b/mailpoet/tests/integration/Newsletter/Blocks/AbandonedCartContentTest.php
@@ -78,6 +78,8 @@ class AbandonedCartContentTest extends \MailPoetTest {
       $this->wp->wpDeletePost((int)$product->ID);
     }
 
+    register_post_type("product", ['public' => true]);
+
     $this->productIds = [];
     $this->productIds[] = $this->createPost('Product 1', '2020-05-01 01:01:01', 'product');
     $this->productIds[] = $this->createPost('Product 2', '2020-06-01 01:01:01', 'product');
diff --git a/mailpoet/tests/integration/_bootstrap.php b/mailpoet/tests/integration/_bootstrap.php
index 43ac91b909..cfbdebb29e 100644
--- a/mailpoet/tests/integration/_bootstrap.php
+++ b/mailpoet/tests/integration/_bootstrap.php
@@ -137,6 +137,7 @@ abstract class MailPoetTest extends \Codeception\TestCase\Test { // phpcs:ignore
     $this->entityManager->clear();
     $this->restoreGlobals();
     wp_set_current_user(0);
+    $this->cleanUpCustomEntities();
     parent::tearDown();
   }
 
@@ -202,6 +203,12 @@ abstract class MailPoetTest extends \Codeception\TestCase\Test { // phpcs:ignore
       }
     }
   }
+
+  protected function cleanUpCustomEntities() {
+    if (post_type_exists('product')) {
+      unregister_post_type('product');
+    }
+  }
 }
 
 function asCallable($fn) {