diff --git a/webdriver/tests/bidi/storage/get_cookies/filter.py b/webdriver/tests/bidi/storage/get_cookies/filter.py
index ba6dc33d373d10c..d5252ff085339a7 100644
--- a/webdriver/tests/bidi/storage/get_cookies/filter.py
+++ b/webdriver/tests/bidi/storage/get_cookies/filter.py
@@ -43,7 +43,6 @@ async def test_filter(bidi_session, new_tab, test_page, origin, domain_value, fi
     recursive_compare(
         {
             "domain": domain_value(),
-            "expiry": None,
             "httpOnly": False,
             "name": cookie_name_1,
             "path": "/webdriver/tests/support",
@@ -150,7 +149,6 @@ async def test_filter_same_site(
     recursive_compare(
         {
             "domain": domain_value(),
-            "expiry": None,
             "httpOnly": False,
             "name": cookie_name_1,
             "path": "/webdriver/tests/support",
@@ -203,7 +201,6 @@ async def test_filter_secure(
     recursive_compare(
         {
             "domain": domain_value(),
-            "expiry": None,
             "httpOnly": False,
             "name": cookie_name_1,
             "path": "/webdriver/tests/support",
@@ -249,7 +246,6 @@ async def test_filter_path(bidi_session, new_tab, test_page, origin, domain_valu
     recursive_compare(
         {
             "domain": domain_value(),
-            "expiry": None,
             "httpOnly": False,
             "name": cookie_name_1,
             "path": cookie_path_1,
diff --git a/webdriver/tests/bidi/storage/get_cookies/invalid.py b/webdriver/tests/bidi/storage/get_cookies/invalid.py
index 47b341f8d0d83a0..7271ae9c23fd93f 100644
--- a/webdriver/tests/bidi/storage/get_cookies/invalid.py
+++ b/webdriver/tests/bidi/storage/get_cookies/invalid.py
@@ -44,13 +44,6 @@ async def test_params_partition_source_origin_invalid_type(bidi_session, value):
         )
 
 
-async def test_params_partition_source_origin_invalid_value(bidi_session):
-    with pytest.raises(error.InvalidArgumentException):
-        await bidi_session.storage.get_cookies(
-            partition=StorageKeyPartitionDescriptor(source_origin="foo")
-        )
-
-
 @pytest.mark.parametrize("value", [False, 42, {}, []])
 async def test_params_partition_user_context_invalid_type(bidi_session, value):
     with pytest.raises(error.InvalidArgumentException):