diff --git a/mitmproxy/cmdline.py b/mitmproxy/cmdline.py
index 09866f5b6..b5b939b8c 100644
--- a/mitmproxy/cmdline.py
+++ b/mitmproxy/cmdline.py
@@ -481,6 +481,7 @@ def proxy_options(parser):
         help="Use the client's IP for server-side connections"
     )
 
+
 def proxy_ssl_options(parser):
     # TODO: Agree to consistently either use "upstream" or "server".
     group = parser.add_argument_group("SSL")
diff --git a/mitmproxy/options.py b/mitmproxy/options.py
index 9ef1f108d..0ac44cd8e 100644
--- a/mitmproxy/options.py
+++ b/mitmproxy/options.py
@@ -69,7 +69,7 @@ class Options(optmanager.OptManager):
             mode = "regular",  # type: str
             no_upstream_cert = False,  # type: bool
             rawtcp = False,  # type: bool
-            spoof_source_address = False, # type: bool
+            spoof_source_address = False,  # type: bool
             upstream_server = "",  # type: str
             upstream_auth = "",  # type: str
             ssl_version_client="secure",  # type: str
diff --git a/netlib/exceptions.py b/netlib/exceptions.py
index 795926f11..376514096 100644
--- a/netlib/exceptions.py
+++ b/netlib/exceptions.py
@@ -59,5 +59,6 @@ class InvalidCertificateException(TlsException):
 class Timeout(TcpException):
     pass
 
+
 class ProtocolException(NetlibException):
     pass