diff --git a/charter.html b/charter.html
index efa1e04..1995f17 100644
--- a/charter.html
+++ b/charter.html
@@ -409,6 +409,10 @@ <h2>
           features can be used to address them, and recommendations for
           maximising accessibility in implementations.
         </p>
+
+	<p>This Working Group expects to follow the
+	  TAG <a href="https://www.w3.org/TR/design-principles/">Web Platform Design Principles</a>.
+	</p>
       </section>
       <section id="coordination">
         <h2>