diff --git a/lib/websocket.js b/lib/websocket.js
index 4391c73ab..de1b03b6a 100644
--- a/lib/websocket.js
+++ b/lib/websocket.js
@@ -1096,7 +1096,7 @@ function sendAfterClose(websocket, data, cb) {
       `WebSocket is not open: readyState ${websocket.readyState} ` +
         `(${readyStates[websocket.readyState]})`
     );
-    cb(err);
+    process.nextTick(cb, err);
   }
 }