diff --git a/scheduler_content_moderation_integration/tests/src/Kernel/ConstraintTestBase.php b/scheduler_content_moderation_integration/tests/src/Kernel/ConstraintTestBase.php
index 7035dca..2e673cb 100644
--- a/scheduler_content_moderation_integration/tests/src/Kernel/ConstraintTestBase.php
+++ b/scheduler_content_moderation_integration/tests/src/Kernel/ConstraintTestBase.php
@@ -8,10 +8,8 @@ use Drupal\workflows\Entity\Workflow;
 
 /**
  * Base class for the Scheduler Content Moderation validator constraint tests.
- *
- * @group scheduler
  */
-class ConstraintTestBase extends KernelTestBase {
+abstract class ConstraintTestBase extends KernelTestBase {
 
   /**
    * {@inheritdoc}