diff --git a/README.md b/README.md
index a88ef423e..fbe31371f 100644
--- a/README.md
+++ b/README.md
@@ -89,6 +89,8 @@ Socket.IO is compatible with [browserify](http://browserify.org/).
     the amount specified by `reconnectionDelay`.
   - `timeout` connection timeout before a `connect_error`
     and `connect_timeout` events are emitted (`20000`)
+  - `autoConnect` by setting this false, you have to call `manager.open`
+    whenever you decide it's appropriate
 
 #### Events
 
diff --git a/lib/manager.js b/lib/manager.js
index 01aebb540..ddfa19af9 100644
--- a/lib/manager.js
+++ b/lib/manager.js
@@ -52,7 +52,8 @@ function Manager(uri, opts){
   this.packetBuffer = [];
   this.encoder = new parser.Encoder();
   this.decoder = new parser.Decoder();
-  this.open();
+  if (opts.autoConnect !== false)
+    this.open();
 }
 
 /**