diff --git a/cookiestore/cookieStore_set_maxAge.https.any.js b/cookiestore/cookieStore_set_maxAge.https.any.js
index 20f5c4abb05c5c..eb9b6d2069f442 100644
--- a/cookiestore/cookieStore_set_maxAge.https.any.js
+++ b/cookiestore/cookieStore_set_maxAge.https.any.js
@@ -26,6 +26,23 @@ cookie_test(async testCase => {
   assert_equals(cookie, null);
 }, 'cookieStore.set with maxAge set to a negative value');
 
+cookie_test(async testCase => {
+  let eventPromise = observeNextCookieChangeEvent();
+  await cookieStore.set(
+    {
+      name: 'cookie-name',
+      value: 'cookie-value',
+      maxAge: 0
+    });
+
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie, null);
+  await cookieStore.set('alt-cookie', 'IGNORE');
+  await verifyCookieChangeEvent(
+    eventPromise, {changed: [{name: 'alt-cookie', value: 'IGNORE'}]},
+    'Already expired cookie is not observed.');
+}, 'cookieStore.set with maxAge set to zero, cookie change event not dispatched');
+
 cookie_test(async testCase => {
   const oneDay = 24 * 60 * 60 * 1000;
   const tomorrow = Date.now() + oneDay ;