diff --git a/src/core/Ros.js b/src/core/Ros.js
index 956fe9f7f..7bc120bfa 100644
--- a/src/core/Ros.js
+++ b/src/core/Ros.js
@@ -33,6 +33,7 @@ class Ros extends EventEmitter2 {
    */
   constructor(options) {
     super();
+    options = options = {};
     var that = this;
     this.socket = null;
     this.idCounter = 0;