diff --git a/lib/transports/websocket.js b/lib/transports/websocket.js
index e0621e550..b52bbeef4 100644
--- a/lib/transports/websocket.js
+++ b/lib/transports/websocket.js
@@ -96,7 +96,11 @@ WS.prototype.doOpen = function () {
     opts.headers = this.extraHeaders;
   }
 
-  this.ws = BrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);
+  try {
+    this.ws = BrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);
+  } catch (err) {
+    return this.emit('error', err)
+  }
 
   if (this.ws.binaryType === undefined) {
     this.supportsBinary = false;