1 files changed, 4 insertions, 1 deletions
diff --git a/testing/web-platform/tests/storage-access-api/storage-access-beyond-cookies.sessionStorage.tentative.sub.https.window.js b/testing/web-platform/tests/storage-access-api/storage-access-beyond-cookies.sessionStorage.tentative.sub.https.window.js
index 1b12f133b2..93b243f6c1 100644
--- a/testing/web-platform/tests/storage-access-api/storage-access-beyond-cookies.sessionStorage.tentative.sub.https.window.js
+++ b/testing/web-platform/tests/storage-access-api/storage-access-beyond-cookies.sessionStorage.tentative.sub.https.window.js
@@ -16,7 +16,10 @@
 async_test(t => {
   // Step 1
   window.addEventListener("message", t.step_func(e => {
-    assert_equals(e.data, "HasAccess for sessionStorage", "Storage Access API should be accessible and return first-party data");
+    if (e.data.type != "result") {
+      return;
+    }
+    assert_equals(e.data.message, "HasAccess for sessionStorage", "Storage Access API should be accessible and return first-party data");
     window.sessionStorage.setItem("window_event", id);
   }));