diff --git a/lib/net/ws.js b/lib/net/ws.js
index f40271e..c5c1ec7 100644
--- a/lib/net/ws.js
+++ b/lib/net/ws.js
@@ -194,6 +194,12 @@ WsTransport.prototype.listen = function(options, callback) {
   server.on("error", function(err) {
     self.emit("error", err);
   });
+
+  // `ws` doesn't emit "close" event by default.
+  server._server.on("close", function() {
+    self.emit("close");
+    delete self._server;
+  });
 };
 
 WsTransport.prototype.send = function() {
@@ -221,10 +227,7 @@ WsTransport.prototype.close = function() {
   if (this._client) {
     this._client.close();
   } else if (this._server) {
-    // `ws` server terminates immediately without any events.
     this._server.close();
-    this.emit("close");
-    delete this._server;
   }
 };