diff --git a/content/dev/build/web/_index.en.md b/content/dev/build/web/_index.en.md
index d6d0e36..c89e5fe 100644
--- a/content/dev/build/web/_index.en.md
+++ b/content/dev/build/web/_index.en.md
@@ -14,6 +14,8 @@ cd flutter/web/js
 # install protoc first http://google.github.io/proto-lens/installing-protoc.html
 npm install ts-proto
 # only works with vite<=2.8, see: https://github.com/vitejs/vite/blob/main/docs/guide/build.md#chunking-strategy
+
+# yarn build currently not working - results in empty src/gen_js_from_hbb.ts (gen_js_from_hbb.ts is not a module)
 yarn build
 
 cd ..