--- a/test/test_environ.py	2022-06-09 10:50:08.693817701 +0300
+++ b/test/test_environ.py	2022-06-09 10:50:36.223708927 +0300
@@ -624,7 +624,7 @@
         response.delete_cookie('name')
         cookies = [value for name, value in response.headerlist
                    if name.title() == 'Set-Cookie']
-        self.assertTrue('name=;' in cookies[0])
+        self.assertTrue('Max-Age=-1' in cookies[0])
 
     def test_set_header(self):
         response = BaseResponse()