diff --git a/core/modules/migrate/src/MigrateExecutableInterface.php b/core/modules/migrate/src/MigrateExecutableInterface.php
index 33d5914b329..33e300e70c1 100644
--- a/core/modules/migrate/src/MigrateExecutableInterface.php
+++ b/core/modules/migrate/src/MigrateExecutableInterface.php
@@ -29,7 +29,7 @@ interface MigrateExecutableInterface {
    *   Usually setting this is not necessary as $process typically starts with
    *   a 'get'. This is useful only when the $process contains a single
    *   destination and needs to access a value outside of the source. See
-   *   \Drupal\migrate\Plugin\migrate\process\Iterator::transformKey for an
+   *   \Drupal\migrate\Plugin\migrate\process\SubProcess::transformKey for an
    *   example.
    *
    * @throws \Drupal\migrate\MigrateException
diff --git a/core/modules/migrate/tests/src/Unit/process/IteratorTest.php b/core/modules/migrate/tests/src/Unit/process/IteratorTest.php
index dbf0c6bc59c..f2124a6db36 100644
--- a/core/modules/migrate/tests/src/Unit/process/IteratorTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/IteratorTest.php
@@ -18,7 +18,7 @@ class IteratorTest extends MigrateTestCase {
   /**
    * The iterator plugin being tested.
    *
-   * @var \Drupal\migrate\Plugin\migrate\process\TestIterator
+   * @var \Drupal\migrate\Plugin\migrate\process\Iterator
    */
   protected $plugin;
 
@@ -33,6 +33,7 @@ class IteratorTest extends MigrateTestCase {
    * Tests the iterator process plugin.
    *
    * @group legacy
+   * @expectedDeprecation The Drupal\migrate\Plugin\migrate\process\Iterator is deprecated in Drupal 8.4.x and will be removed before Drupal 9.0.0. Instead, use Drupal\migrate\Plugin\migrate\process\SubProcess
    */
   public function testIterator() {
     $migration = $this->getMigration();
diff --git a/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php b/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
index 5c2e0e99a17..9dfd1420d1b 100644
--- a/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
+++ b/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
@@ -112,7 +112,6 @@ trait DeprecationListenerTrait {
       'MigrateCckFieldPluginManager is deprecated in Drupal 8.3.x and will be removed before Drupal 9.0.x. Use \Drupal\migrate_drupal\Annotation\MigrateFieldPluginManager instead.',
       'MigrateCckFieldPluginManagerInterface is deprecated in Drupal 8.3.x and will be removed before Drupal 9.0.x. Use \Drupal\migrate_drupal\Annotation\MigrateFieldPluginManagerInterface instead.',
       'The "plugin.manager.migrate.cckfield" service is deprecated. You should use the \'plugin.manager.migrate.field\' service instead. See https://www.drupal.org/node/2751897',
-      'The Drupal\migrate\Plugin\migrate\process\Iterator is deprecated in Drupal 8.4.x and will be removed before Drupal 9.0.0. Instead, use Drupal\migrate\Plugin\migrate\process\SubProcess',
       'Drupal\system\Tests\Update\DbUpdatesTrait is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Use \Drupal\FunctionalTests\Update\DbUpdatesTrait instead. See https://www.drupal.org/node/2896640.',
       'Using "null" for the value of node "count" of "Drupal\Core\Template\TwigNodeTrans" is deprecated since version 1.25 and will be removed in 2.0.',
       'Using "null" for the value of node "options" of "Drupal\Core\Template\TwigNodeTrans" is deprecated since version 1.25 and will be removed in 2.0.',