diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index c6c27c2f0f..4ef9d9e5b9 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -458,7 +458,7 @@ function watchdog_exception($type, Exception $exception, $message = NULL, $varia
  * @see https://www.drupal.org/node/2774931
  *
  * @deprecated in Drupal 8.5.0, will be removed before Drupal 9.0.0.
- *   Use \Drupal::service('messenger')->addMessage() instead.
+ *   Use \Drupal\Core\Messenger\MessengerInterface::addMessage() instead.
  */
 function drupal_set_message($message = NULL, $type = 'status', $repeat = FALSE) {
   @trigger_error('drupal_set_message() is deprecated Drupal 8.5.0, will be removed before Drupal 9.0.0. Use \Drupal\Core\Messenger\MessengerInterface::addMessage() instead. See https://www.drupal.org/node/2774931', E_USER_DEPRECATED);
@@ -495,8 +495,8 @@ function drupal_set_message($message = NULL, $type = 'status', $repeat = FALSE)
  * @see https://www.drupal.org/node/2774931
  *
  * @deprecated in Drupal 8.5.0, will be removed before Drupal 9.0.0.
- *   Use \Drupal::service('messenger')>all() or
- *   \Drupal::service('messenger')>messagesByType() instead.
+ *   Use \Drupal\Core\Messenger\MessengerInterface::all() or
+ *   \Drupal\Core\Messenger\MessengerInterface::messagesByType() instead.
  */
 function drupal_get_messages($type = NULL, $clear_queue = TRUE) {
   @trigger_error('drupal_get_message() is deprecated Drupal 8.5.0, will be removed before Drupal 9.0.0. Use \Drupal\Core\Messenger\MessengerInterface::all() or \Drupal\Core\Messenger\MessengerInterface::messagesByType() instead. See https://www.drupal.org/node/2774931', E_USER_DEPRECATED);