diff --git a/client/build.sh b/client/build.sh
index 6bc90fe..2d77294 100755
--- a/client/build.sh
+++ b/client/build.sh
@@ -18,7 +18,7 @@ echo "[epx] wasm-opt finished"
 
 AUTOGENERATED_SOURCE=$(<"out/epoxy_client.js")
 # patch for websocket sharedarraybuffer error
-AUTOGENERATED_SOURCE=${AUTOGENERATED_SOURCE//getObject(arg0).send(getArrayU8FromWasm0(arg1, arg2)/getObject(arg0).send(new Uint8Array(getArrayU8FromWasm0(arg1, arg2))}
+AUTOGENERATED_SOURCE=${AUTOGENERATED_SOURCE//getObject(arg0).send(getArrayU8FromWasm0(arg1, arg2)/getObject(arg0).send(new Uint8Array(getArrayU8FromWasm0(arg1, arg2)).buffer}
 echo "$AUTOGENERATED_SOURCE" > pkg/epoxy.js
 
 WASM_BASE64=$(base64 -w0 out/epoxy_client_bg.wasm)