diff --git a/packages/worker/src/index.ts b/packages/worker/src/index.ts
index 8a26a69dde..0547afab38 100644
--- a/packages/worker/src/index.ts
+++ b/packages/worker/src/index.ts
@@ -24,7 +24,6 @@ import {
 db.init()
 import koaBody from "koa-body"
 import http from "http"
-import bson from "bson"
 import api from "./api"
 
 const koaSession = require("koa-session")
@@ -101,10 +100,6 @@ export default server.listen(parseInt(env.PORT || "4002"), async () => {
   }
   console.log(startupLog)
 
-  if (coreEnv.BSON_BUFFER_SIZE) {
-    bson.setInternalBufferSize(coreEnv.BSON_BUFFER_SIZE)
-  }
-
   await initPro()
   await redis.clients.init()
   features.init()