diff --git a/rust/macros/lib.rs b/rust/macros/lib.rs
index 159e75292970..5be0cb9db3ee 100644
--- a/rust/macros/lib.rs
+++ b/rust/macros/lib.rs
@@ -94,7 +94,7 @@ use proc_macro::TokenStream;
 ///   - `license`: ASCII string literal of the license of the kernel module (required).
 ///   - `alias`: array of ASCII string literals of the alias names of the kernel module.
 ///   - `firmware`: array of ASCII string literals of the firmware files of
-/// the kernel module.
+///     the kernel module.
 #[proc_macro]
 pub fn module(ts: TokenStream) -> TokenStream {
     module::module(ts)