diff --git a/core/themes/olivero/templates/block/block--system-powered-by-block.html.twig b/core/themes/olivero/templates/block/block--system-powered-by-block.html.twig
index 0b94cdf9b95048d36b76628dc098f46935a2d16f..3b3f02d422ef1c2d15cbe60d446b4f04af028145 100644
--- a/core/themes/olivero/templates/block/block--system-powered-by-block.html.twig
+++ b/core/themes/olivero/templates/block/block--system-powered-by-block.html.twig
@@ -1,5 +1,14 @@
 {% extends "block.html.twig" %}
-
+{#
+/**
+ * @file
+ * Olivero's theme implementation for Powered by Drupal block.
+ *
+ * The Powered by Drupal block is an optional link to the home page of the
+ * Drupal project.
+ *
+ */
+#}
 {% block content %}
   {{ attach_library('olivero/powered-by-block') }}
   <span>