diff --git a/layout/base/tests/test_bug607529.html b/layout/base/tests/test_bug607529.html
index 5b08130aa1e7..a74aff565cdd 100644
--- a/layout/base/tests/test_bug607529.html
+++ b/layout/base/tests/test_bug607529.html
@@ -99,9 +99,13 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=607529
// the iframe containing this page is isolated from first-party storage access,
// which isolates BroadcastChannel communication.
SpecialPowers.wrap(document).notifyUserGestureActivation();
- SpecialPowers.addPermission("storageAccessAPI", true, window.location.href).then(() =>{
- SpecialPowers.wrap(document).requestStorageAccess().then(() => {
- executeTest();
+ SpecialPowers.pushPrefEnv({
+ set: [["privacy.partition.always_partition_third_party_non_cookie_storage", false]],
+ }).then(() => {
+ SpecialPowers.addPermission("storageAccessAPI", true, window.location.href).then(() => {
+ SpecialPowers.wrap(document).requestStorageAccess().then(() => {
+ executeTest();
+ });
});
});
} else {