diff --git a/crates/ruma-macros/src/identifiers.rs b/crates/ruma-macros/src/identifiers.rs
index 42ea25b1..ae52e03d 100644
--- a/crates/ruma-macros/src/identifiers.rs
+++ b/crates/ruma-macros/src/identifiers.rs
@@ -128,6 +128,13 @@ pub fn expand_id_zst(input: ItemStruct) -> syn::Result<TokenStream> {
             }
         }
 
+        #[automatically_derived]
+        impl #impl_generics AsRef<#id_ty> for #id_ty {
+            fn as_ref(&self) -> &#id_ty {
+                self
+            }
+        }
+
         #[automatically_derived]
         impl #impl_generics AsRef<str> for #id_ty {
             fn as_ref(&self) -> &str {