diff --git a/core/modules/layout_builder/tests/src/Kernel/LayoutBuilderFieldLayoutCompatibilityTest.php b/core/modules/layout_builder/tests/src/Kernel/LayoutBuilderFieldLayoutCompatibilityTest.php
index 59a76615c1..0509a2ee0d 100644
--- a/core/modules/layout_builder/tests/src/Kernel/LayoutBuilderFieldLayoutCompatibilityTest.php
+++ b/core/modules/layout_builder/tests/src/Kernel/LayoutBuilderFieldLayoutCompatibilityTest.php
@@ -16,6 +16,7 @@ class LayoutBuilderFieldLayoutCompatibilityTest extends LayoutBuilderCompatibili
    */
   public static $modules = [
     'field_layout',
+    'block',
   ];
 
   /**
diff --git a/core/tests/Drupal/KernelTests/Core/Render/Element/ActionsTest.php b/core/tests/Drupal/KernelTests/Core/Render/Element/ActionsTest.php
index 135c7aabb1..fc32f164b2 100644
--- a/core/tests/Drupal/KernelTests/Core/Render/Element/ActionsTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Render/Element/ActionsTest.php
@@ -21,6 +21,7 @@ class ActionsTest extends KernelTestBase implements FormInterface {
    * {@inheritdoc}
    */
   public function getFormId() {
+    return 'actions_test_form';
   }
 
   /**
diff --git a/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php b/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
index 34c6d5852a..7e71865a7c 100644
--- a/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
@@ -17,7 +17,7 @@ class ContentNegotiationRoutingTest extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = ['conneg_test'];
+  public static $modules = ['conneg_test', 'system'];
 
   /**
    * {@inheritdoc}