diff --git a/example/concise-init-tcp-ip-defaults.js b/example/concise-init-tcp-ip-defaults.js
index a92f1e9..ca2d6cc 100644
--- a/example/concise-init-tcp-ip-defaults.js
+++ b/example/concise-init-tcp-ip-defaults.js
@@ -6,7 +6,7 @@
 
 var modbus = require('../lib');
 
-var master = modbus.createMaster({});
+var master = modbus.createMaster();
 
 master.once('connected', function()
 {
diff --git a/lib/index.js b/lib/index.js
index 3f57faf..2a0b76e 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -108,8 +108,8 @@ function createTransport(options)
 }
 
 /**
- * @param {object} options
- * @param {object} options.transport
+ * @param {object} [options]
+ * @param {object} [options.transport]
  * @param {boolean} [options.retryOnException]
  * @param {number} [options.maxConcurrentRequests]
  * @param {number} [options.defaultUnit]
@@ -120,6 +120,11 @@ function createTransport(options)
  */
 function createMaster(options)
 {
+  if (typeof options === 'undefined')
+  {
+    options = {};
+  }
+
   options.transport = createTransport(options.transport);
   options = new Master.Options(options);