diff --git a/README.md b/README.md
index 655df3a..cb7a316 100644
--- a/README.md
+++ b/README.md
@@ -18,8 +18,9 @@ A sqlite database has been generated as well. Access it with `sqlite3 ./web/genr
 This database has foreign keys.
 
 ## Web UI
-Run `npm start` to start the web UI. It uses [sql.js](https://sql.js.org/) to query
-the SQLite database client side. Visit http://localhost:11234/ to view the UI.
+Run `npm install` and then `npm start` to start the web UI. It uses
+[sql.js](https://sql.js.org/) to query the SQLite database client side.
+Visit http://localhost:11234/ to view the UI.
 
 ![genreviews web ui](./genreviews-web.png)