diff --git a/core/modules/system/tests/src/Kernel/Migrate/d6/MigrateSystemConfigurationTest.php b/core/modules/system/tests/src/Kernel/Migrate/d6/MigrateSystemConfigurationTest.php
index c8e800b..cfb62ad 100644
--- a/core/modules/system/tests/src/Kernel/Migrate/d6/MigrateSystemConfigurationTest.php
+++ b/core/modules/system/tests/src/Kernel/Migrate/d6/MigrateSystemConfigurationTest.php
@@ -71,6 +71,7 @@ class MigrateSystemConfigurationTest extends MigrateDrupal6TestBase {
       'cache' => [
         'page' => [
           'max_age' => 0,
+          'max_age_provider' => 'fixed',
         ],
       ],
       'css' => [