diff --git a/example-projects/simple/README.md b/example-projects/simple/README.md
index c86a7aa4..e1fe877d 100644
--- a/example-projects/simple/README.md
+++ b/example-projects/simple/README.md
@@ -12,6 +12,7 @@ To play around with this example project, you will first need
 Set up and start the server like this:
 
     $ lein deps
+    $ lein cljsbuild once
     $ lein ring server-headless 3000
 
 Now, point your web browser at `http://localhost:3000`, and see the web app in action!