diff --git a/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html b/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html
index fcd7f1d3ca0254..048b93a964b9b6 100644
--- a/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html
+++ b/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html
@@ -13,7 +13,7 @@
   const path = location.pathname.substring(0, location.pathname.lastIndexOf('/') + 1);
   iframe.src = "https://{{domains[www1]}}:{{ports[https][0]}}" + path + "echo-PaymentRequest.html";
   iframe.onload = t.step_func(() => {
-    if (i === 1) {
+    if (i === 0) {
       iframe.allowPaymentRequest = false;
     }
     iframe.contentWindow.postMessage('What is the result of new PaymentRequest(...)?', '*');
diff --git a/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html b/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html
index 6a1221450e8345..c7ed3aeab448eb 100644
--- a/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html
+++ b/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html
@@ -18,7 +18,8 @@
   });
 
   window.onmessage = t.step_func_done((e) => {
-    assert_equals(e.data.message, 'Success');
+    assert_equals(e.data.message, 'Exception');
+    assert_array_equals(e.data.details, [true /* ex instanceof DOMException*/, 18 /* ex.code */, 'SecurityError' /* ex.name */]);
   });
 
   document.body.appendChild(iframe);
diff --git a/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html b/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html
index bf6fe14fc74662..4564d264c4e2c5 100644
--- a/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html
+++ b/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html
@@ -13,7 +13,7 @@
   const path = location.pathname.substring(0, location.pathname.lastIndexOf('/') + 1);
   iframe.src = "https://{{domains[www1]}}:{{ports[https][0]}}" + path + "echo-PaymentRequest.html";
   iframe.onload = t.step_func(() => {
-    if (i === 1) {
+    if (i === 0) {
       iframe.allowPaymentRequest = true;
     }
     iframe.contentWindow.postMessage('What is the result of new PaymentRequest(...)?', '*');