diff --git a/index.js b/index.js
index bad3010..f1e7c81 100644
--- a/index.js
+++ b/index.js
@@ -1,7 +1,7 @@
 import EventSource from './EventSource'
 
 class RNEventSource {
-  constructor(url, options) {
+  constructor(url, options={}) {
     this.url         = url;
     this.options     = options;
     this.eventSource = new EventSource(url, options);