diff --git a/README.md b/README.md
index 8e97183..effb49c 100644
--- a/README.md
+++ b/README.md
@@ -34,4 +34,4 @@ There is google OAuth support, which can be enabled by setting `GOOGLE_ENABLED`
 The create-react-app's service worker works only in production environment.
 You can build the frontend with `cd react && npm run build`.
 
-Express is listening at http://localhost:4000 and serving the built frontend.
+In production mode, express is listening at http://localhost:4000 and serving the built frontend.