diff --git a/specs/paymentrequest.html b/specs/paymentrequest.html
index d5160f90..df0b06f0 100644
--- a/specs/paymentrequest.html
+++ b/specs/paymentrequest.html
@@ -478,11 +478,10 @@ <h2>abort()</h2>
       </section>
 
       <section>
-        <h2 id="state-transitions">State transitions</h2>
-        <div class="note">
+        <h2 id="state-transitions" class="informative">State transitions</h2>
           <p>The internal slot [[\state]] follows the following state transitions:</p>
-          <img src="state-transitions.svg" width="608" height="235">
-        </div>
+          <img alt="Transition diagram for internal slot state of a PaymentRequest object" 
+               src="state-transitions.svg" width="608" height="235">
       </section>
 
       <section>