diff --git a/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php b/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php
index 4712e7e..66e7b04 100644
--- a/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php
+++ b/core/modules/migrate_drupal_ui/src/Form/MigrateUpgradeForm.php
@@ -18,16 +18,6 @@
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
- * If a migration has previously run, perform an incremental migration.
- */
-const MIGRATE_UPGRADE_INCREMENTAL = 1;
-
-/**
- * If a migration has previously run, roll it back and start fresh.
- */
-const MIGRATE_UPGRADE_ROLLBACK = 2;
-
-/**
  * Defines a multi-step form for performing direct site upgrades.
  *
  * @internal
@@ -37,6 +27,16 @@ class MigrateUpgradeForm extends ConfirmFormBase {
   use MigrationConfigurationTrait;
 
   /**
+   * If a migration has previously run, perform an incremental migration.
+   */
+  const MIGRATE_UPGRADE_INCREMENTAL = 1;
+
+  /**
+   * If a migration has previously run, roll it back and start fresh.
+   */
+  const MIGRATE_UPGRADE_ROLLBACK = 2;
+
+  /**
    * The state service.
    *
    * @var \Drupal\Core\State\StateInterface