diff --git a/tests/src/Functional/LoadTest.php b/tests/src/Functional/LoadTest.php
index eec9221..7a9201e 100644
--- a/tests/src/Functional/LoadTest.php
+++ b/tests/src/Functional/LoadTest.php
@@ -17,7 +17,7 @@ class LoadTest extends BrowserTestBase {
    *
    * @var array
    */
-  public static $modules = ['themable'];
+  protected static $modules = ['themable'];
 
   /**
    * A user with permission to administer site configuration.
@@ -29,7 +29,7 @@ class LoadTest extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
     $this->user = $this->drupalCreateUser(['administer site configuration']);
     $this->drupalLogin($this->user);