diff --git a/core/modules/config/src/Tests/AssertConfigEntityImportTrait.php b/core/modules/config/src/Tests/AssertConfigEntityImportTrait.php
index 93ec172683..0175319084 100644
--- a/core/modules/config/src/Tests/AssertConfigEntityImportTrait.php
+++ b/core/modules/config/src/Tests/AssertConfigEntityImportTrait.php
@@ -2,7 +2,7 @@
 
 namespace Drupal\config\Tests;
 
-@trigger_error('The ' . __NAMESPACE__ . '\AssertConfigEntityImportTrait is deprecated in Drupal 8.4.x and will be removed before Drupal 9.0.0. Instead, use \Drupal\Tests\config\Traits\AssertConfigEntityImportTrait', E_USER_DEPRECATED);
+@trigger_error('The ' . __NAMESPACE__ . '\AssertConfigEntityImportTrait is deprecated in Drupal 8.4.1 and will be removed before Drupal 9.0.0. Instead, use \Drupal\Tests\config\Traits\AssertConfigEntityImportTrait. See https://www.drupal.org/node/2916197.', E_USER_DEPRECATED);
 
 use Drupal\Core\Config\Entity\ConfigEntityInterface;
 
@@ -12,8 +12,10 @@
  * Can be used by test classes that extend \Drupal\simpletest\WebTestBase or
  * \Drupal\KernelTests\KernelTestBase.
  *
- * @deprecated in Drupal 8.4.x and will be removed before Drupal 9.0.0.
+ * @deprecated in Drupal 8.4.1 and will be removed before Drupal 9.0.0.
  *   Use \Drupal\Tests\config\Traits\AssertConfigEntityImportTrait.
+ *
+ * @see https://www.drupal.org/node
  */
 trait AssertConfigEntityImportTrait {