diff --git a/rustler_codegen/src/context.rs b/rustler_codegen/src/context.rs
index 6988734c..077da964 100644
--- a/rustler_codegen/src/context.rs
+++ b/rustler_codegen/src/context.rs
@@ -86,7 +86,10 @@ impl<'a> Context<'a> {
     }
 
     pub fn atoms_module_name(&self, span: Span) -> Ident {
-        Ident::new(&format!("RUSTLER_ATOMS_{}", self.ident), span)
+        Ident::new(
+            &format!("rustler_atoms_{}", self.ident).to_snake_case(),
+            span,
+        )
     }
 
     pub fn encode(&self) -> bool {
diff --git a/rustler_codegen/src/ex_struct.rs b/rustler_codegen/src/ex_struct.rs
index 4d720606..e051c494 100644
--- a/rustler_codegen/src/ex_struct.rs
+++ b/rustler_codegen/src/ex_struct.rs
@@ -53,7 +53,6 @@ pub fn transcoder_decorator(ast: &syn::DeriveInput, add_exception: bool) -> Toke
     };
 
     let gen = quote! {
-        #[allow(non_snake_case)]
         mod #atoms_module_name {
             #atom_defs
         }