diff --git a/CHANGELOG.md b/CHANGELOG.md
index a155b60..5212799 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Improve error message from syn in generator. !15
+- Removed top level module (register_interface), and now it can have arbitrary name.
 
 ## [0.3.1] - 2025-04-11
 
diff --git a/src/generator.rs b/src/generator.rs
index 110e4f1..b6cd10d 100644
--- a/src/generator.rs
+++ b/src/generator.rs
@@ -176,7 +176,7 @@ This code is auto generated using endcap_sl_software_ri_generator.
             .map(|(path, tokens)| -> Result<(PathBuf, syn::File), _> {
                 let tokens = if path
                     .file_name()
-                    .is_some_and(|file| file == "register_interface.rs")
+                    .is_some_and(|file| file == "lib.rs")
                 {
                     quote! {
                         #![doc = #build_metadata]
@@ -234,10 +234,10 @@ impl CodeGen for Module {
 
             pub use super::RegisterInterface;
         };
-        files.insert(PathBuf::from("./register_interface.rs"), out);
+        files.insert(PathBuf::from("./lib.rs"), out);
 
         let ident_register_interface = util::parse_to_ident("RegisterInterface").unwrap();
-        let register_interface_mod = PathBuf::from("register_interface");
+        let register_interface_mod = PathBuf::from("./");
         let files = self
             .elements_other
             .into_iter()