diff -u b/core/modules/config_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBlockSourceTest.php b/core/modules/config_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBlockSourceTest.php
--- b/core/modules/config_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBlockSourceTest.php
+++ b/core/modules/config_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBlockSourceTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\Tests\config_translation\Kernel\Plugin\migrate\source\d7;
+namespace Drupal\Tests\config_translation\Kernel\Plugin\migrate\source\d6;
 
 use Drupal\Tests\migrate\Kernel\MigrateSqlSourceTestBase;
 
diff -u b/core/modules/content_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBoxTest.php b/core/modules/content_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBoxTest.php
--- b/core/modules/content_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBoxTest.php
+++ b/core/modules/content_translation/tests/src/Kernel/Plugin/migrate/source/d6/I18nBoxTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Drupal\Tests\content_translation\Kernel\Plugin\migrate\source\d7;
+namespace Drupal\Tests\content_translation\Kernel\Plugin\migrate\source\d6;
 
 use Drupal\Tests\migrate\Kernel\MigrateSqlSourceTestBase;