diff --git a/core/tests/Drupal/Tests/Core/Site/SettingsTest.php b/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
index 7090275cca..bcabd35f17 100644
--- a/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
+++ b/core/tests/Drupal/Tests/Core/Site/SettingsTest.php
@@ -146,7 +146,7 @@ public function testGetInstanceReflection() {
 
     $class = new \ReflectionClass(Settings::class);
     $instance_property = $class->getProperty("instance");
-    $instance_property->setValue(NULL);
+    $instance_property->setValue(NULL, NULL);
 
     $this->expectException(\BadMethodCallException::class);
     $settings->getInstance();
@@ -201,7 +201,7 @@ public function testFakeDeprecatedSettings(array $settings_config, string $setti
     $instance_property = $class->getProperty('deprecatedSettings');
     $deprecated_settings = $instance_property->getValue();
     $deprecated_settings['deprecated_legacy'] = $deprecated_setting;
-    $instance_property->setValue($deprecated_settings);
+    $instance_property->setValue(NULL, $deprecated_settings);
 
     if ($expect_deprecation_message) {
       $this->expectDeprecation($deprecated_setting['message']);