diff --git a/agaric/templates/block/block--page-title-block.html.twig b/agaric/templates/block/block--page-title-block.html.twig
index 7e5747b..1e4ee13 100644
--- a/agaric/templates/block/block--page-title-block.html.twig
+++ b/agaric/templates/block/block--page-title-block.html.twig
@@ -1,3 +1,4 @@
+{# Overrides octavia/src/templates/block/block.html.twig #}
 {% extends '@bulma/block/block.html.twig' %}
   {%
     set classes = [