diff --git a/core/lib/Drupal/Core/Plugin/DefaultPluginManager.php b/core/lib/Drupal/Core/Plugin/DefaultPluginManager.php
index 389850c2249d559de5cea5c4a92be8297e85a940..c74fcbe958fb19e94bd2277a5384dfef58eb96b5 100644
--- a/core/lib/Drupal/Core/Plugin/DefaultPluginManager.php
+++ b/core/lib/Drupal/Core/Plugin/DefaultPluginManager.php
@@ -156,7 +156,7 @@ public function setCacheBackend(CacheBackendInterface $cache_backend, $cache_key
   }
 
   /**
-   * Initializes the alter hook.
+   * Sets the alter hook name.
    *
    * @param string $alter_hook
    *   Name of the alter hook; for example, to invoke