diff --git a/lib/client.js b/lib/client.js
index fc4325e..257c948 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -103,7 +103,7 @@ Acme.prototype.post=function(url, body, cb) {
 };
 
 
-function registerNewAccount(state, options, cb) {
+function registerNewAccount(options, cb) {
   var state = {};
 
   if (!options.accountPrivateKeyPem) {