diff --git a/core/lib/Drupal/Core/Entity/Annotation/EntityType.php b/core/lib/Drupal/Core/Entity/Annotation/EntityType.php
index f3c02ed..596d511 100644
--- a/core/lib/Drupal/Core/Entity/Annotation/EntityType.php
+++ b/core/lib/Drupal/Core/Entity/Annotation/EntityType.php
@@ -84,6 +84,8 @@ class EntityType extends Plugin {
   /**
    * The human-readable name of the type.
    *
+   * In your plugin annotation, this value must be wrapped in @Translation().
+   *
    * @var string
    */
   public $label;
@@ -91,6 +93,8 @@ class EntityType extends Plugin {
   /**
    * The human-readable name of the entity bundles, e.g. Vocabulary.
    *
+   * In your plugin annotation, this value must be wrapped in @Translation().
+   *
    * @var string
    */
   public $bundle_label;