diff --git a/reference/classobj/functions/is-subclass-of.xml b/reference/classobj/functions/is-subclass-of.xml
index dcdb9d790d..9313ed48cc 100644
--- a/reference/classobj/functions/is-subclass-of.xml
+++ b/reference/classobj/functions/is-subclass-of.xml
@@ -130,6 +130,12 @@ yes, WidgetFactory_Child is a subclass of WidgetFactory
    </example>
   </para>
  </refsect1>
+
+ <refsect1 role="notes">
+  &reftitle.notes;
+  &note.uses-autoload;
+ </refsect1>
+
  <refsect1 role="seealso">
   &reftitle.seealso;
   <para>