diff --git a/frontend.py b/frontend.py
index fecb1df..2fd598d 100755
--- a/frontend.py
+++ b/frontend.py
@@ -104,7 +104,7 @@ def login_twitter(user):
     try:
         consumer_key = config["twitter"]["consumer_key"]
         consumer_secret = config["twitter"]["consumer_secret"]
-        callback_url = request.get_header('host') + "/login/twitter/callback"
+        callback_url = url("/login/twitter/callback")
         auth = tweepy.OAuthHandler(consumer_key, consumer_secret, callback_url)
         try:
             redirect_url = auth.get_authorization_url()