diff --git a/ruma-identifiers-macros/src/lib.rs b/ruma-identifiers-macros/src/lib.rs
index 244cf104..be5cdd0a 100644
--- a/ruma-identifiers-macros/src/lib.rs
+++ b/ruma-identifiers-macros/src/lib.rs
@@ -17,9 +17,6 @@ pub fn device_id(input: TokenStream) -> TokenStream {
     output.into()
 }
 
-// w/o macro:  UserId::try_from("@user:example.org").unwrap()
-// w/ macro:   user_id!("@user:example.org")
-
 #[proc_macro]
 pub fn device_key_id(input: TokenStream) -> TokenStream {
     let id = parse_macro_input!(input as LitStr);