diff --git a/synapse/handlers/identity.py b/synapse/handlers/identity.py
index cb5e1e80a..5c7263591 100644
--- a/synapse/handlers/identity.py
+++ b/synapse/handlers/identity.py
@@ -42,8 +42,8 @@ class IdentityHandler(BaseHandler):
         # each request
         http_client = SimpleHttpClient(self.hs)
         # XXX: make this configurable!
-        trustedIdServers = ['matrix.org', 'localhost:8090']
-        #trustedIdServers = ['matrix.org']
+        # trustedIdServers = ['matrix.org', 'localhost:8090']
+        trustedIdServers = ['matrix.org']
         if not creds['idServer'] in trustedIdServers:
             logger.warn('%s is not a trusted ID server: rejecting 3pid ' +
                         'credentials', creds['idServer'])
@@ -86,4 +86,4 @@ class IdentityHandler(BaseHandler):
             logger.debug("bound threepid %r to %s", creds, mxid)
         except CodeMessageException as e:
             data = json.loads(e.msg)
-        defer.returnValue(data)
\ No newline at end of file
+        defer.returnValue(data)
diff --git a/synapse/handlers/login.py b/synapse/handlers/login.py
index 5c39356d7..f7f369834 100644
--- a/synapse/handlers/login.py
+++ b/synapse/handlers/login.py
@@ -80,4 +80,4 @@ class LoginHandler(BaseHandler):
         yield self.store.user_add_threepid(
             user_id, medium, address, validated_at,
             self.hs.get_clock().time_msec()
-        )
\ No newline at end of file
+        )
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index d4483c3a1..7b68585a1 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -18,18 +18,15 @@ from twisted.internet import defer
 
 from synapse.types import UserID
 from synapse.api.errors import (
-    AuthError, Codes, SynapseError, RegistrationError, InvalidCaptchaError,
-    CodeMessageException
+    AuthError, Codes, SynapseError, RegistrationError, InvalidCaptchaError
 )
 from ._base import BaseHandler
 import synapse.util.stringutils as stringutils
 from synapse.util.async import run_on_reactor
-from synapse.http.client import SimpleHttpClient
 from synapse.http.client import CaptchaServerHttpClient
 
 import base64
 import bcrypt
-import json
 import logging
 import urllib
 
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 4bc01f3cc..8f62e5c6f 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -185,4 +185,4 @@ class RegistrationStore(SQLBaseStore):
         }, {
             "validated_at": validated_at,
             "added_at": added_at,
-        })
\ No newline at end of file
+        })