diff --git a/core/lib/Drupal/Core/Annotation/QueueWorker.php b/core/lib/Drupal/Core/Annotation/QueueWorker.php
index 85a2296..a6fb422 100644
--- a/core/lib/Drupal/Core/Annotation/QueueWorker.php
+++ b/core/lib/Drupal/Core/Annotation/QueueWorker.php
@@ -23,6 +23,9 @@
  * QueueWorker plugin if you want, however, you need to take care of processing
  * the items in the queue in that case. See \Drupal\Core\Cron for an example.
  *
+ * The cron service presumes the id of QueueWorker plugins is the same as the
+ * name of the queue as used by \Drupal\Core\Queue\QueueFactory::get().
+ *
  * Plugin Namespace: Plugin\QueueWorker
  *
  * For a working example, see