diff --git a/letsencrypt/client.py b/letsencrypt/client.py
index 8b6bbf2e2..ae1667dfa 100644
--- a/letsencrypt/client.py
+++ b/letsencrypt/client.py
@@ -62,7 +62,7 @@ class Client(object):
 
         # TODO: Allow for other alg types besides RS256
         self.network = network2.Network(
-            config.server_url, jwk.JWKRSA.load(self.account.key.pem),
+            config.server, jwk.JWKRSA.load(self.account.key.pem),
             verify_ssl=(not config.test_mode))
 
         self.config = config