diff --git a/README.md b/README.md
index e3378b4..6914a9a 100644
--- a/README.md
+++ b/README.md
@@ -14,24 +14,24 @@ Next, we concatenate this with the Elm JavaScript output and an app launcher sni
 
 * No event loop
 * Hence, no [TEA](https://guide.elm-lang.org/architecture/); the `main` function must return a static view
-* The Elm app module must be called "Main"
+* ~~The Elm app module must be called "Main"~~
 * Nodes can only have one parent (this should always be the case)
 
 # Usage
 
 1. Clone this repository and navigate into your local copy
 2. Run `elm init`.
-3. Create `src/Main.elm` with the following content:
+3. Create `src/Hello.elm` with the following content:
 
 ```elm
-module Main exposing(main)
+module Hello exposing(main)
 
 import Html exposing (p, text)
 
 main = p [] [text "Hello World!"]
 ```
 
-4. Run `./build.sh`; this generates the corresponding HTML code:
+4. Run `./build.sh src/Hello.elm`; this generates the corresponding HTML code:
 
 ```html
 <p>
diff --git a/build.sh b/build.sh
index ef8fab8..7c67b11 100755
--- a/build.sh
+++ b/build.sh
@@ -2,7 +2,7 @@
 
 w1="$(mktemp out_$$_1_XXXX.js)"
 
-elm make --optimize --output=${w1} src/Main.elm 1>&2
+elm make --optimize --output=${w1} $1 1>&2
 
 w2="$(mktemp out_$$_XXXX.js)"
 
diff --git a/launch.js b/launch.js
index 466b46a..20c6fd8 100644
--- a/launch.js
+++ b/launch.js
@@ -4,7 +4,7 @@
 	// and the Elm app code
 
 	// here we lanch the app
-	var app = Elm.Main.init({ node: document.getElementById("elm") });
+  Elm[Object.keys(Elm)[0]].init({ node: document.getElementById("elm") });
 
 	document.children[0].dump();