diff --git a/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateCustomBlockContentTranslationMissingTest.php b/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateCustomBlockContentTranslationMissingTest.php
index 9f8580b..b40c88c 100644
--- a/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateCustomBlockContentTranslationMissingTest.php
+++ b/core/modules/content_translation/tests/src/Kernel/Migrate/d6/MigrateCustomBlockContentTranslationMissingTest.php
@@ -2,7 +2,7 @@
 
 namespace Drupal\Tests\content_translation\Kernel\Migrate\d6;
 
-use Drupal\migrate\MigrateException;
+use Drupal\Component\Render\FormattableMarkup;
 use Drupal\Tests\migrate_drupal\Kernel\d6\MigrateDrupal6TestBase;
 
 /**
@@ -22,15 +22,16 @@ class MigrateCustomBlockContentTranslationMissingTest extends MigrateDrupal6Test
   ];
 
   /**
-   * {@inheritdoc}
+   * Tests the Drupal 6 i18n custom block strings to Drupal 8 migration when the
+   * source translation tables are missing.
    */
-  protected function setUp() {
-    parent::setUp();
+  public function testCustomBlockContentTranslation() {
     $this->installConfig(['block_content']);
     $this->installEntitySchema('block_content');
     // Remove tables required for the migrating translations.
     $this->sourceDatabase->schema()->dropTable('i18n_strings');
     $this->sourceDatabase->schema()->dropTable('locales_target');
+    $this->startCollectingMessages();
     $this->executeMigrations([
       'language',
       'd6_filter_format',
@@ -39,14 +40,8 @@ protected function setUp() {
       'd6_custom_block',
       'd6_custom_block_translation',
     ]);
-  }
-
-  /**
-   * Tests the Drupal 6 i18n custom block strings to Drupal 8 migration when the
-   * source translation tables are missing.
-   */
-  public function testCustomBlockContentTranslation() {
-    $this->setExpectedException(MigrateException::class, "Missing one or both translation tables, 'i8n_strings' and 'locales_target'");
+    $this->assertEquals($this->migrateMessages['error'], [new FormattableMarkup('Migration failed with source plugin exception: @e', ['@e' => "Missing one or both translation tables, 'i8n_strings' and 'locales_target'"])]);
+    $this->stopCollectingMessages();
   }
 
 }