diff --git a/src/worker/async_proxy.js b/src/worker/async_proxy.js
index 2f1a7a42..7576c836 100644
--- a/src/worker/async_proxy.js
+++ b/src/worker/async_proxy.js
@@ -143,7 +143,7 @@ AsyncProxy.prototype.delegate = function(method, options) {
     }
   }
 
-  return new Promise(async (resolve, reject) => {
+  return new Promise((resolve, reject) => {
     // clone packets (for web worker structured cloning algorithm)
     this.workers[workerId].postMessage({ id:id, event:method, options:packet.clone.clonePackets(options) }, util.getTransferables(options));
     this.workers[workerId].requests++;