diff --git a/pytest.ini b/pytest.ini
index 529ad5d27..4f2548db2 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -226,6 +226,7 @@ flake8-ignore =
     tests/test_pipeline_files.py F401 E501 W293 E303 E272 E226
     tests/test_pipeline_images.py F401 F841 E501 E303
     tests/test_pipeline_media.py E501 E741 E731 E128 E261 E306 E502
+    tests/test_proxy_connect.py E501 E741
     tests/test_request_cb_kwargs.py E501
     tests/test_responsetypes.py E501 E302 E305
     tests/test_robotstxt_interface.py F401 E302 E501 W291 E501
diff --git a/tests/test_proxy_connect.py b/tests/test_proxy_connect.py
index 4147dc944..7a7ec4281 100644
--- a/tests/test_proxy_connect.py
+++ b/tests/test_proxy_connect.py
@@ -28,24 +28,17 @@ from mitmproxy.tools.main import mitmdump
 sys.argv[0] = "mitmdump"
 sys.exit(mitmdump())
         """
-        cert_path = os.path.join(
-            os.path.abspath(os.path.dirname(__file__)),
-            'keys',
-            'mitmproxy-ca.pem'
-        )
-        self.proc = Popen(
-            [
-                sys.executable,
-                '-c', script,
-                '--listen-host', '127.0.0.1',
-                '--listen-port', '0',
-                '--proxyauth', '%s:%s' % (self.auth_user, self.auth_pass),
-                '--certs', cert_path,
-                '--ssl-insecure',
-            ],
-            stdout=PIPE,
-            env=get_testenv()
-        )
+        cert_path = os.path.join(os.path.abspath(os.path.dirname(__file__)),
+                                 'keys', 'mitmproxy-ca.pem')
+        self.proc = Popen([sys.executable,
+                           '-c', script,
+                           '--listen-host', '127.0.0.1',
+                           '--listen-port', '0',
+                           '--proxyauth', '%s:%s' % (self.auth_user, self.auth_pass),
+                           '--certs', cert_path,
+                           '--ssl-insecure',
+                           ],
+                          stdout=PIPE, env=get_testenv())
         line = self.proc.stdout.readline().decode('utf-8')
         host_port = re.search(r'listening at http://([^:]+:\d+)', line).group(1)
         address = 'http://%s:%s@%s' % (self.auth_user, self.auth_pass, host_port)
@@ -86,16 +79,6 @@ class ProxyConnectTestCase(TestCase):
             yield crawler.crawl(self.mockserver.url("/status?n=200", is_secure=True))
         self._assert_got_response_code(200, logs)
 
-    @pytest.mark.xfail(reason='mitmproxy gives an error for noconnect requests')
-    @defer.inlineCallbacks
-    def test_https_noconnect(self):
-        proxy = os.environ['https_proxy']
-        os.environ['https_proxy'] = proxy + '?noconnect'
-        crawler = get_crawler(SimpleSpider)
-        with LogCapture() as logs:
-            yield crawler.crawl(self.mockserver.url("/status?n=200", is_secure=True))
-        self._assert_got_response_code(200, logs)
-
     @pytest.mark.xfail(reason='Python 3.6+ fails this earlier', condition=sys.version_info.minor >= 6)
     @defer.inlineCallbacks
     def test_https_connect_tunnel_error(self):
@@ -124,6 +107,23 @@ class ProxyConnectTestCase(TestCase):
         echo = json.loads(crawler.spider.meta['responses'][0].text)
         self.assertTrue('Proxy-Authorization' not in echo['headers'])
 
+    # The noconnect mode isn't supported by the current mitmproxy, it returns
+    # "Invalid request scheme: https" as it doesn't seem to support full URLs in GET at all,
+    # and it's not clear what behavior is intended by Scrapy and by mitmproxy here.
+    # https://github.com/mitmproxy/mitmproxy/issues/848 may be related.
+    # The Scrapy noconnect mode was required, at least in the past, to work with Crawlera,
+    # and https://github.com/scrapy-plugins/scrapy-crawlera/pull/44 seems to be related.
+
+    @pytest.mark.xfail(reason='mitmproxy gives an error for noconnect requests')
+    @defer.inlineCallbacks
+    def test_https_noconnect(self):
+        proxy = os.environ['https_proxy']
+        os.environ['https_proxy'] = proxy + '?noconnect'
+        crawler = get_crawler(SimpleSpider)
+        with LogCapture() as l:
+            yield crawler.crawl(self.mockserver.url("/status?n=200", is_secure=True))
+        self._assert_got_response_code(200, l)
+
     @pytest.mark.xfail(reason='mitmproxy gives an error for noconnect requests')
     @defer.inlineCallbacks
     def test_https_noconnect_auth_error(self):