diff --git a/index.html b/index.html
index e277b971..ee0a7ae1 100644
--- a/index.html
+++ b/index.html
@@ -1041,7 +1041,7 @@ <h2>
           </li>
           <li data-tests=
           "show-method-optional-promise-rejects-manual.https.html, show-method-optional-promise-resolves-manual.https.html">
-          If <var>detailsPromise</var> is present, then:
+          If <var>detailsPromise</var> was passed, then:
             <ol>
               <li>Run the <a>update a <code>PaymentRequest</code>'s details
               algorithm</a> with <var>detailsPromise</var> and