diff --git a/README.md b/README.md
index f58a60a2d..b3ecc4d5a 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ pub fn hello_world(name: String) -> String {
 // Required to register the extension with PHP.
 #[php_module]
 pub fn module(module: ModuleBuilder) -> ModuleBuilder {
-    module
+    module.function(wrap_function!(hello_world))
 }
 ```