diff --git a/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php b/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php
index 956a4e6..8cab8a5 100644
--- a/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php
+++ b/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php
@@ -9,11 +9,12 @@
 
 use Drupal\migrate\MigrateExecutable;
 use Drupal\simpletest\TestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Test helper for running a complete Drupal migration.
  */
-abstract class MigrateFullDrupalTestBase extends MigrateDrupalTestBase {
+abstract class MigrateFullDrupalTestBase extends MigrateDrupal6TestBase {
 
   /**
    * Get the dump classes required for this migration test.