diff --git a/tests/src/Functional/LoadTest.php b/tests/src/Functional/LoadTest.php
index 846ba19e23895f89bd56589736a3e47d34434ab5..ed46c41fcec09ae4538c11ad253285da8634dbb6 100644
--- a/tests/src/Functional/LoadTest.php
+++ b/tests/src/Functional/LoadTest.php
@@ -24,7 +24,7 @@ class LoadTest extends BrowserTestBase {
    *
    * @var array
    */
-  public static $modules = ['facets_autocomplete'];
+  protected static $modules = ['facets_autocomplete'];
 
   /**
    * A user with permission to administer site configuration.
@@ -36,7 +36,7 @@ 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);