diff --git a/fish-webworker/src/worker.js b/fish-webworker/src/worker.js
index 01136b7..8dce44c 100644
--- a/fish-webworker/src/worker.js
+++ b/fish-webworker/src/worker.js
@@ -7,7 +7,7 @@ import {
 
 let initPromise = init('/blockfish.wasm');
 
-async function handle(msg) {
+function handle(msg) {
     switch (msg.type) {
     case 'init':
         {
@@ -37,7 +37,7 @@ self.addEventListener('message', async e => {
 
     let resp;
     try {
-        resp = await handle(e.data);
+        resp = handle(e.data);
     } catch (e) {
         resp = { error: e.toString() };
     }