diff --git a/core/lib/Drupal/Core/Entity/EntityType.php b/core/lib/Drupal/Core/Entity/EntityType.php
index 5191f4d1d2e663bddd5fe6e4d4a3afa4e1687db6..4183a1d8fffd010ccfa2cece9bb6d4c5e8edabd3 100644
--- a/core/lib/Drupal/Core/Entity/EntityType.php
+++ b/core/lib/Drupal/Core/Entity/EntityType.php
@@ -200,9 +200,15 @@ class EntityType extends PluginDefinition implements EntityTypeInterface {
   /**
    * A definite singular/plural name of the type.
    *
-   * Needed keys: "singular" and "plural".
+   * Needed keys: "singular" and "plural". Can also have key: "context".
+   * @code
+   * [
+   *    'singular' => '@count entity',
+   *    'plural' => '@count entities',
+   *    'context' => 'Entity context',
+   * ]
    *
-   * @var string|\Drupal\Core\StringTranslation\TranslatableMarkup
+   * @var string[]
    *
    * @see \Drupal\Core\Entity\EntityTypeInterface::getCountLabel()
    */