diff --git a/scrapy/core/downloader/contextfactory.py b/scrapy/core/downloader/contextfactory.py
index da4dd8f35..5e6ad57a1 100644
--- a/scrapy/core/downloader/contextfactory.py
+++ b/scrapy/core/downloader/contextfactory.py
@@ -1,12 +1,11 @@
 from OpenSSL import SSL
 from twisted.internet.ssl import ClientContextFactory
 
-from scrapy import twisted_version
-
-if twisted_version >= (14, 0, 0):
+try:
 
     from zope.interface.declarations import implementer
 
+    # the following should be available from Twisted 14.0.0
     from twisted.internet.ssl import optionsForClientTLS, CertificateOptions, platformTrust
     from twisted.internet._sslverify import ClientTLSOptions
     from twisted.web.client import BrowserLikePolicyForHTTPS
@@ -69,8 +68,7 @@ if twisted_version >= (14, 0, 0):
                                             'method': self._ssl_method,
                                        })
 
-
-else:
+except ImportError:
 
     class ScrapyClientContextFactory(ClientContextFactory):
         "A SSL context factory which is more permissive against SSL bugs."
@@ -86,6 +84,4 @@ else:
             # Enable all workarounds to SSL bugs as documented by
             # http://www.openssl.org/docs/ssl/SSL_CTX_set_options.html
             ctx.set_options(SSL.OP_ALL)
-            if hostname and ClientTLSOptions is not None: # workaround for TLS SNI
-                ClientTLSOptions(hostname, ctx)
             return ctx
diff --git a/tests/keys/server.pem b/tests/keys/server.pem
deleted file mode 100644
index 8356f4a49..000000000
--- a/tests/keys/server.pem
+++ /dev/null
@@ -1,52 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDGnXh/GMCLpNNI
-AIvfBWlPrRCLFWxd2ICLYSUq3/jwh31CppGKlfaSmUYnrMxnT4hg2f6gBqlmq1gK
-jQqDkqQQtHsSljRQF58NRFtz99w45jRmrGs+F5zoggJuyv7/lKXy/BXOc40NodIl
-qRuo/uhoPjeXaUNziwpRj4rByRdLwQ6MfRcfdZ0TpVJ4J7apJ66pZt85L63u8TZi
-AZdBgcowX6giola7kUUMG66bSi2X6sIFxdXHwzrWlFNnSbKqOqKlGrjmBHUYqRFr
-gLALKkaMpF30olHn7QLqJ2592hMFVkOQAzNr8Xb15mF27BuWFYd7P6TirsxCEd+9
-BFFbhl0vAgMBAAECggEAf1ndN3GBlIi9SL/A7+GiYwpPPz8fWxVFZxmFIXa3QlM+
-CAyR6dC6Z8mL6EiuT9f5VFCzKZzb5g8bxrgk87SFKojvGT3ikTB0NaeNFFDrjjhd
-hTAtG4U8gQFL2gqjcvG3bpQgz13cJc+K1ccXC0dXce/i6Vz/eQjANwfZKuRr4Y/p
-Ml3ZtkarT7cZ2TZRDYd643U2nfrNmeLA9wwwO5mgNYu7HSpI4idpVM+rzoS9ZbU1
-Jxhrdq7GELvnd+Ko3WHTSrkQyb53GtJaLFOSAMxQlZAbRGJMv2VtXSPe+NyA0kxO
-V4O9CJ2QL1Bxqk4MQicKGtGoIsFbfR/qYQZgNEuHoQKBgQDlqEYSGpEcyKNvCjZ+
-Dv5hFUT7GZ24MNRvMBdMHPJEkmxvNpwaNkOGXL6zmhDk5Y0HOrzNv64Llmg623y0
-pn9Vh3CvMKDlq5t8910BJhXzZAM9/E9ui/YuQsFwCdWJQFYVMZUIAdylxbDkg6Mf
-WzHkx82edwWgb7hOFJhEW3h51wKBgQDdZaofTKeSLUmxIbF1yqm4iX67wyhHFFZL
-RZLEcu35ZTJqz3TRpr9KpHCtq9J2gZbqo2Dvqznwfk+yUqT2gkibtk3qvmv/qHQt
-FGX5joWLD2E22UgGc4bzonTSQcxPfPYjNZa6Iv7koPgJqO1k3aYLG3mDMgI/Yurz
-3j8udCI8aQKBgQCe8uNkfky3PkqXfNsQTnJTYTQ4EpettuYg+oj1Xgdz3F/+bS6H
-mc0Mfr5ichyFQDdmrImmYaclT/ld2zGpmp8A5FfieOazbx2T1WTieaixpyPzT+Du
-IyLFC+D0GWpYr1WlH4cFXryHY5c14cIR3r1emcc/iSM00n4eVHS6wxBUSwKBgQCQ
-fTAI20slgD7uxjF90XTwhXNbcONReDlVSKOfZ+5dbCj6QkhYJv4C5czP2yowwyRO
-H7A82j+m75htpbgZVS+zx8eUIxByumqPnRdsRhJrje8BD88MvsrdKDIbomuHmOM+
-WVP0SLCXX2JhU4kS4gDikNy9vZ5v5cu2ul37oDlTuQKBgBl4Qs6Q0xUotlvy/fMf
-L3c6GUIeRsLyQCKFfKYiUNLHqqutBSYmsAlx3XOhcK4DZ7/gFAXO6mpYJlwXOdrI
-IMcSXuJvZDPAYMXOyZUTgNjPcbQ8t0by+EKPwnTReIBf1Y17vPDfisf5IEKZEWvM
-YDXg6cfx9R5QePjvZohlItOu
------END PRIVATE KEY-----
------BEGIN CERTIFICATE-----
-MIID8DCCAtgCAws5AzANBgkqhkiG9w0BAQUFADCBuzELMAkGA1UEBhMCVFIxDjAM
-BgNVBAgUBcdvcnVtMRkwFwYDVQQHHhAAQgBhAV8AbQBhAGsA5wExMRIwEAYDVQQD
-Ewlsb2NhbGhvc3QxHDAaBgNVBAoTE1R3aXN0ZWQgTWF0cml4IExhYnMxJDAiBgNV
-BAsTG0F1dG9tYXRlZCBUZXN0aW5nIEF1dGhvcml0eTEpMCcGCSqGSIb3DQEJARYa
-c2VjdXJpdHlAdHdpc3RlZG1hdHJpeC5jb20wIBcNMTQwOTE2MDE0MjQ2WhgPMjEx
-NDA4MjMwMTQyNDZaMIG7MQswCQYDVQQGEwJUUjEOMAwGA1UECBQFx29ydW0xGTAX
-BgNVBAceEABCAGEBXwBtAGEAawDnATExEjAQBgNVBAMTCWxvY2FsaG9zdDEcMBoG
-A1UEChMTVHdpc3RlZCBNYXRyaXggTGFiczEkMCIGA1UECxMbQXV0b21hdGVkIFRl
-c3RpbmcgQXV0aG9yaXR5MSkwJwYJKoZIhvcNAQkBFhpzZWN1cml0eUB0d2lzdGVk
-bWF0cml4LmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMadeH8Y
-wIuk00gAi98FaU+tEIsVbF3YgIthJSrf+PCHfUKmkYqV9pKZRieszGdPiGDZ/qAG
-qWarWAqNCoOSpBC0exKWNFAXnw1EW3P33DjmNGasaz4XnOiCAm7K/v+UpfL8Fc5z
-jQ2h0iWpG6j+6Gg+N5dpQ3OLClGPisHJF0vBDox9Fx91nROlUngntqknrqlm3zkv
-re7xNmIBl0GByjBfqCKiVruRRQwbrptKLZfqwgXF1cfDOtaUU2dJsqo6oqUauOYE
-dRipEWuAsAsqRoykXfSiUeftAuonbn3aEwVWQ5ADM2vxdvXmYXbsG5YVh3s/pOKu
-zEIR370EUVuGXS8CAwEAATANBgkqhkiG9w0BAQUFAAOCAQEAK+HqbIUN6qHYYQZw
-7qqsTJWni8NOfK3aguyKAPcdCPP2DCZ6zlxxkUWL57gvsohyDu8Nr9iSI6wePjmI
-cN9eCZdc6mD9kYW4qBYhh2T48TOhEEW7zO6bWQUqWohHW+bG+GfrHnvxIx56OC2B
-eDS2djvvScYm45etlHprfrVEDIssh956O6qJCySax3D2w+i8YanXji1EbS61XTDw
-CMxDdWYmd2MDARRwlMcfcUIfKZUGl5NmqpnOx+H5MyAGwt86s647GMYZborQh+Mj
-tNHVpyKf/a8/HjqP1sCOrjCPZIjP6Qp5j4gifAjUStNmCgaBe7CpFtBSLnHqb4o/
-gU7u1w==
------END CERTIFICATE-----
diff --git a/tests/mockserver.py b/tests/mockserver.py
index 087ad958f..365ec81fd 100644
--- a/tests/mockserver.py
+++ b/tests/mockserver.py
@@ -206,8 +206,8 @@ class MockServer():
 
 def ssl_context_factory():
     return ssl.DefaultOpenSSLContextFactory(
-         os.path.join(os.path.dirname(__file__), 'keys/server.pem'),
-         os.path.join(os.path.dirname(__file__), 'keys/server.pem'),
+         os.path.join(os.path.dirname(__file__), 'keys/cert.pem'),
+         os.path.join(os.path.dirname(__file__), 'keys/cert.pem'),
          )