diff --git a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
index 78d5082..5a59182 100644
--- a/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
+++ b/core/modules/file/tests/src/Unit/Plugin/migrate/process/d6/FileUriTest.php
@@ -4,7 +4,6 @@
 
 use Drupal\file\Plugin\migrate\process\d6\FileUri;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Row;
 use Drupal\Tests\migrate\Unit\MigrateTestCase;
 
@@ -69,7 +68,7 @@ public function testTemporary() {
   }
 
   protected function doTransform(array $value) {
-    $executable = new MigrateExecutable($this->getMigration(), new MigrateMessage());
+    $executable = new MigrateExecutable($this->getMigration());
     $row = new Row();
 
     return (new FileUri([], 'file_uri', []))
diff --git a/core/modules/migrate/src/MigrateExecutable.php b/core/modules/migrate/src/MigrateExecutable.php
index 9d48618..521af91 100644
--- a/core/modules/migrate/src/MigrateExecutable.php
+++ b/core/modules/migrate/src/MigrateExecutable.php
@@ -96,17 +96,17 @@ class MigrateExecutable implements MigrateExecutableInterface {
    * @param \Drupal\migrate\Plugin\MigrationInterface $migration
    *   The migration to run.
    * @param \Drupal\migrate\MigrateMessageInterface $message
-   *   The message to record.
+   *   (optional) The message to record.
    * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
-   *   The event dispatcher.
+   *   (optional) The event dispatcher.
    *
    * @throws \Drupal\migrate\MigrateException
    */
-  public function __construct(MigrationInterface $migration, MigrateMessageInterface $message, EventDispatcherInterface $event_dispatcher = NULL) {
+  public function __construct(MigrationInterface $migration, MigrateMessageInterface $message = NULL, EventDispatcherInterface $event_dispatcher = NULL) {
     $this->migration = $migration;
-    $this->message = $message;
-    $this->migration->getIdMap()->setMessage($message);
-    $this->eventDispatcher = $event_dispatcher;
+    $this->message = $message ?: new MigrateMessage();
+    $this->migration->getIdMap()->setMessage($this->message);
+    $this->eventDispatcher = $event_dispatcher ?: \Drupal::service('event_dispatcher');
     // Record the memory limit in bytes
     $limit = trim(ini_get('memory_limit'));
     if ($limit == '-1') {
diff --git a/core/modules/migrate/tests/src/Functional/process/DownloadFunctionalTest.php b/core/modules/migrate/tests/src/Functional/process/DownloadFunctionalTest.php
index 2a73d70..ccbebff 100644
--- a/core/modules/migrate/tests/src/Functional/process/DownloadFunctionalTest.php
+++ b/core/modules/migrate/tests/src/Functional/process/DownloadFunctionalTest.php
@@ -3,7 +3,6 @@
 namespace Drupal\Tests\migrate\Functional\process;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Plugin\MigrateIdMapInterface;
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\Tests\BrowserTestBase;
@@ -51,7 +50,7 @@ public function testExceptionThrow() {
 
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
 
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     $result = $executable->import();
 
     // Check that the migration has completed.
diff --git a/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php b/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php
index 0ebc719..54c60ba 100644
--- a/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php
+++ b/core/modules/migrate/tests/src/Kernel/MigrateEntityContentBaseTest.php
@@ -5,7 +5,6 @@
 use Drupal\KernelTests\KernelTestBase;
 use Drupal\language\Entity\ConfigurableLanguage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Plugin\migrate\destination\EntityContentBase;
 use Drupal\migrate\Plugin\MigrateIdMapInterface;
 use Drupal\migrate\Plugin\MigrationInterface;
@@ -190,7 +189,7 @@ public function testEntityWithStringId() {
     ];
 
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     $result = $executable->import();
     $this->assertEquals(MigrationInterface::RESULT_COMPLETED, $result);
 
diff --git a/core/modules/migrate/tests/src/Kernel/MigrateEventsTest.php b/core/modules/migrate/tests/src/Kernel/MigrateEventsTest.php
index 4de21fd..8dc4aa9 100644
--- a/core/modules/migrate/tests/src/Kernel/MigrateEventsTest.php
+++ b/core/modules/migrate/tests/src/Kernel/MigrateEventsTest.php
@@ -7,7 +7,6 @@
 use Drupal\migrate\Event\MigrateMapSaveEvent;
 use Drupal\migrate\Event\MigratePostRowSaveEvent;
 use Drupal\migrate\Event\MigratePreRowSaveEvent;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Event\MigrateEvents;
 use Drupal\migrate\MigrateExecutable;
 use Drupal\KernelTests\KernelTestBase;
@@ -76,7 +75,7 @@ public function testMigrateEvents() {
 
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
 
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     // As the import runs, events will be dispatched, recording the received
     // information in state.
     $executable->import();
diff --git a/core/modules/migrate/tests/src/Kernel/MigrateInterruptionTest.php b/core/modules/migrate/tests/src/Kernel/MigrateInterruptionTest.php
index d99329e..207af4d 100644
--- a/core/modules/migrate/tests/src/Kernel/MigrateInterruptionTest.php
+++ b/core/modules/migrate/tests/src/Kernel/MigrateInterruptionTest.php
@@ -3,7 +3,6 @@
 namespace Drupal\Tests\migrate\Kernel;
 
 use Drupal\migrate\Event\MigratePostRowSaveEvent;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate\Event\MigrateEvents;
 use Drupal\migrate\MigrateExecutable;
@@ -56,7 +55,7 @@ public function testMigrateEvents() {
 
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
 
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     // When the import runs, the first row imported will trigger an
     // interruption.
     $result = $executable->import();
diff --git a/core/modules/migrate/tests/src/Kernel/MigrateSkipRowTest.php b/core/modules/migrate/tests/src/Kernel/MigrateSkipRowTest.php
index 3b0091d..8c5e01e 100644
--- a/core/modules/migrate/tests/src/Kernel/MigrateSkipRowTest.php
+++ b/core/modules/migrate/tests/src/Kernel/MigrateSkipRowTest.php
@@ -3,7 +3,6 @@
 namespace Drupal\Tests\migrate\Kernel;
 
 use Drupal\KernelTests\KernelTestBase;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate\Plugin\MigrateIdMapInterface;
@@ -50,7 +49,7 @@ public function testPrepareRowSkip() {
 
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
 
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     $result = $executable->import();
     $this->assertEqual($result, MigrationInterface::RESULT_COMPLETED);
 
@@ -85,7 +84,7 @@ public function testPrepareRowSkip() {
     ];
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
 
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     $result = $executable->import();
     $this->assertEquals($result, MigrationInterface::RESULT_COMPLETED);
 
diff --git a/core/modules/migrate/tests/src/Kernel/process/ExtractTest.php b/core/modules/migrate/tests/src/Kernel/process/ExtractTest.php
index 8c747ab..9338b9e 100644
--- a/core/modules/migrate/tests/src/Kernel/process/ExtractTest.php
+++ b/core/modules/migrate/tests/src/Kernel/process/ExtractTest.php
@@ -4,7 +4,6 @@
 
 use Drupal\KernelTests\KernelTestBase;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Plugin\MigrationInterface;
 
 /**
@@ -66,7 +65,7 @@ public function testMultipleValueExplode(array $source_data, array $expected_dat
 
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
 
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     $result = $executable->import();
 
     // Migration needs to succeed before further assertions are made.
diff --git a/core/modules/migrate/tests/src/Kernel/process/HandleMultiplesTest.php b/core/modules/migrate/tests/src/Kernel/process/HandleMultiplesTest.php
index b4cc0e8..dc63de3 100644
--- a/core/modules/migrate/tests/src/Kernel/process/HandleMultiplesTest.php
+++ b/core/modules/migrate/tests/src/Kernel/process/HandleMultiplesTest.php
@@ -4,7 +4,6 @@
 
 use Drupal\KernelTests\KernelTestBase;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Plugin\MigrationInterface;
 
 /**
@@ -94,7 +93,7 @@ public function testScalarAndMultipleValues(array $source_data, array $expected_
 
     $migration = \Drupal::service('plugin.manager.migration')->createStubMigration($definition);
 
-    $executable = new MigrateExecutable($migration, new MigrateMessage());
+    $executable = new MigrateExecutable($migration);
     $result = $executable->import();
 
     // Migration needs to succeed before further assertions are made.
diff --git a/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php b/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
index 1f7d94a..df41e82 100644
--- a/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/UrlEncodeTest.php
@@ -4,7 +4,6 @@
 
 use Drupal\migrate\Plugin\migrate\process\UrlEncode;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Row;
 use Drupal\Tests\migrate\Unit\MigrateTestCase;
 
@@ -56,7 +55,7 @@ public function testUrls($input, $output) {
    *   Encoded URL.
    */
   protected function doTransform($value) {
-    $executable = new MigrateExecutable($this->getMigration(), new MigrateMessage());
+    $executable = new MigrateExecutable($this->getMigration());
     $row = new Row();
 
     return (new UrlEncode([], 'urlencode', []))
diff --git a/core/modules/migrate_drupal/migrate_drupal.module b/core/modules/migrate_drupal/migrate_drupal.module
index 9b00e07..c3f7078 100644
--- a/core/modules/migrate_drupal/migrate_drupal.module
+++ b/core/modules/migrate_drupal/migrate_drupal.module
@@ -9,7 +9,6 @@
 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\migrate\Exception\RequirementsException;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Plugin\RequirementsInterface;
 
 /**
@@ -49,7 +48,7 @@ function migrate_drupal_migration_plugins_alter(&$definitions) {
       if ($source_plugin instanceof RequirementsInterface) {
         $source_plugin->checkRequirements();
       }
-      $executable = new MigrateExecutable($vocabulary_migration, new MigrateMessage());
+      $executable = new MigrateExecutable($vocabulary_migration);
       $process = ['vid' => $definitions['d6_taxonomy_vocabulary']['process']['vid']];
       foreach ($source_plugin as $row) {
         $executable->processRow($row, $process);