diff --git a/src/EventSubscriber/AddressEventSubscriber.php b/src/EventSubscriber/AddressEventSubscriber.php
index d36cbfc..5fd3918 100644
--- a/src/EventSubscriber/AddressEventSubscriber.php
+++ b/src/EventSubscriber/AddressEventSubscriber.php
@@ -59,7 +59,7 @@ class AddressEventSubscriber implements EventSubscriberInterface {
   /**
    * {@inheritdoc}
    */
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
 
     $events = [];
 
diff --git a/tests/src/Functional/QuickNodeCloneExcludeNodeFieldsTest.php b/tests/src/Functional/QuickNodeCloneExcludeNodeFieldsTest.php
index 39bafaf..e48f4db 100644
--- a/tests/src/Functional/QuickNodeCloneExcludeNodeFieldsTest.php
+++ b/tests/src/Functional/QuickNodeCloneExcludeNodeFieldsTest.php
@@ -11,6 +11,11 @@ use Drupal\Tests\BrowserTestBase;
  */
 class QuickNodeCloneExcludeNodeFieldsTest extends BrowserTestBase {
 
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaultTheme = 'stark';
+
   /**
    * The installation profile to use with this test.
    *
diff --git a/tests/src/Functional/QuickNodeCloneTest.php b/tests/src/Functional/QuickNodeCloneTest.php
index 8ebae0d..e04cd20 100644
--- a/tests/src/Functional/QuickNodeCloneTest.php
+++ b/tests/src/Functional/QuickNodeCloneTest.php
@@ -11,6 +11,11 @@ use Drupal\Tests\BrowserTestBase;
  */
 class QuickNodeCloneTest extends BrowserTestBase {
 
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaultTheme = 'stark';
+
   /**
    * {@inheritdoc}
    */