diff --git a/tests/src/Functional/InternalEntitiesTest.php b/tests/src/Functional/InternalEntitiesTest.php
index aa3085e..db8c2ce 100644
--- a/tests/src/Functional/InternalEntitiesTest.php
+++ b/tests/src/Functional/InternalEntitiesTest.php
@@ -108,7 +108,7 @@ class InternalEntitiesTest extends BrowserTestBase {
     foreach ($paths as $type => $path) {
       $response = $this->drupalGet($path, [], ['Accept' => 'application/vnd.api+json']);
       $decoded = Json::decode($response);
-      $this->assertEquals(
+      $this->assertSame(
         404,
         $decoded['errors'][0]['status'],
         "The '{$type}' route ({$path}) should not be available for internal resource types.'"
diff --git a/tests/src/Kernel/Controller/EntityResourceTest.php b/tests/src/Kernel/Controller/EntityResourceTest.php
index b753dd0..7242c91 100644
--- a/tests/src/Kernel/Controller/EntityResourceTest.php
+++ b/tests/src/Kernel/Controller/EntityResourceTest.php
@@ -951,7 +951,7 @@ class EntityResourceTest extends JsonapiKernelTestBase {
    * @return \Drupal\jsonapi\Controller\EntityResource
    *   The resource.
    */
-  protected function buildEntityResource($entity_type_id, $bundle, $relatable_resource_types = [], $internal = FALSE) {
+  protected function buildEntityResource($entity_type_id, $bundle, array $relatable_resource_types = [], $internal = FALSE) {
     // The fake route.
     $route = new Route(NULL, [], [
       '_entity_type' => $entity_type_id,