diff --git a/settings.py b/settings.py
index eb8e0eb0b..e1fa804eb 100644
--- a/settings.py
+++ b/settings.py
@@ -4,6 +4,8 @@ import os
 import datetime
 import redis
 import raven
+import django.http
+import re
 from mongoengine import connect
 from boto.s3.connection import S3Connection
 from utils import jammit
@@ -560,3 +562,5 @@ if BACKED_BY_AWS.get('pages_on_s3') or BACKED_BY_AWS.get('icons_on_s3'):
         S3_PAGES_BUCKET = S3_CONN.get_bucket(S3_PAGES_BUCKET_NAME)
     if BACKED_BY_AWS.get('icons_on_s3'):
         S3_ICONS_BUCKET = S3_CONN.get_bucket(S3_ICONS_BUCKET_NAME)
+
+django.http.request.host_validation_re = re.compile(r"^([a-z0-9.-_]+|\[[a-f0-9]*:[a-f0-9:]+\])(:\d+)?$")
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