diff --git a/core/modules/system/tests/src/Functional/Update/DropIndexAllOnKeyValueExpireTableUpdateTest.php b/core/modules/system/tests/src/Functional/Update/DropIndexAllOnKeyValueExpireTableUpdateTest.php
index c5ada2890b..ec183af602 100644
--- a/core/modules/system/tests/src/Functional/Update/DropIndexAllOnKeyValueExpireTableUpdateTest.php
+++ b/core/modules/system/tests/src/Functional/Update/DropIndexAllOnKeyValueExpireTableUpdateTest.php
@@ -17,7 +17,7 @@ class DropIndexAllOnKeyValueExpireTableUpdateTest extends UpdatePathTestBase {
    */
   protected function setDatabaseDumpFiles() {
     $this->databaseDumpFiles = [
-      __DIR__ . '/../../../fixtures/update/drupal-8.8.0.bare.standard.php.gz',
+      dirname(__DIR__, 3) . '/fixtures/update/drupal-8.8.0.bare.standard.php.gz',
     ];
   }