diff --git a/tests/integration/test_aiohttp.py b/tests/integration/test_aiohttp.py
index b4861d2..e389270 100644
--- a/tests/integration/test_aiohttp.py
+++ b/tests/integration/test_aiohttp.py
@@ -339,18 +339,14 @@ def test_cookies(scheme, tmpdir):
         with vcr.use_cassette(tmp) as cassette:
             async with aiohttp.ClientSession() as session:
                 cookies_resp = await session.get(cookies_url)
-                home_resp = await session.get(
-                    home_url, cookies=req_cookies, headers=req_headers
-                )
+                home_resp = await session.get(home_url, cookies=req_cookies, headers=req_headers)
         assert_responses(cookies_resp, home_resp)
 
         # -------------------------- Play --------------------------- #
         with vcr.use_cassette(tmp, record_mode="none") as cassette:
             async with aiohttp.ClientSession() as session:
                 cookies_resp = await session.get(cookies_url)
-                home_resp = await session.get(
-                    home_url, cookies=req_cookies, headers=req_headers
-                )
+                home_resp = await session.get(home_url, cookies=req_cookies, headers=req_headers)
         assert_responses(cookies_resp, home_resp)
 
     def assert_responses(cookies_resp, home_resp):
diff --git a/vcr/stubs/aiohttp_stubs/__init__.py b/vcr/stubs/aiohttp_stubs/__init__.py
index ac6b11b..56c7b37 100644
--- a/vcr/stubs/aiohttp_stubs/__init__.py
+++ b/vcr/stubs/aiohttp_stubs/__init__.py
@@ -238,9 +238,7 @@ def vcr_request(cassette, real_request):
             request_url = URL(url).with_query(params)
 
         c_header = headers.pop(hdrs.COOKIE, None)
-        cookie_header = _build_cookie_header(
-            self, cookies, c_header, request_url
-        )
+        cookie_header = _build_cookie_header(self, cookies, c_header, request_url)
         if cookie_header:
             headers[hdrs.COOKIE] = cookie_header