diff --git a/lib/interface/clients.js b/lib/interface/clients.js
index 0bc79b7..a0077ad 100644
--- a/lib/interface/clients.js
+++ b/lib/interface/clients.js
@@ -52,7 +52,7 @@ Clients.prototype = {
         new Client(this.createsend, clientId).getPrimaryContact(callback);
     },
 
-    getListsForEmail: function (clientId, callback) {
+    getListsForEmail: function (clientId, emailAddress, callback) {
         new Client(this.createsend, clientId).getListsForEmail(emailAddress, callback);
     },