diff --git a/lib/api-client/resources/group.js b/lib/api-client/resources/group.js
index <HASH>..<HASH> 100644
--- a/lib/api-client/resources/group.js
+++ b/lib/api-client/resources/group.js
@@ -130,6 +130,14 @@ Group.get = function (options, done) {
  * @param  {Function} done
  */
 Group.list = function (options, done) {
+  if (arguments.length === 1) {
+    done = options;
+    options = {};
+  }
+  else {
+    options = options || {};
+  }
+  
   return this.http.get(this.path, {
     data: options,
     done: done || noop
feat(group): allow list to be called w/o options

Related to #CAM-<I>