diff --git a/crates/relax-macros/src/lib.rs b/crates/relax-macros/src/lib.rs
index d6da2e2..4c715fa 100644
--- a/crates/relax-macros/src/lib.rs
+++ b/crates/relax-macros/src/lib.rs
@@ -176,9 +176,9 @@ fn derive_impl(input: syn::DeriveInput) -> syn::Result<TokenStream> {
             .any(|attr| attr.path().is_ident("relax"));
 
         Ok(match (nested, get_generic_ty("Option", ty).is_some()) {
-            (false, false) => quote! { #name: value.#name.ok_or(::relax::RequiredFieldNotSet(stringify!(#name)))? },
+            (false, false) => quote! { #name: value.#name.ok_or(::relax::RequiredFieldNotSet(concat!("`", stringify!(#name), "` of ", stringify!(#base))))? },
             (false, true) => quote! { #name: value.#name },
-            (true, false) => quote! { #name: value.#name.ok_or(::relax::RequiredFieldNotSet(stringify!(#name)))?.try_into()? },
+            (true, false) => quote! { #name: value.#name.ok_or(::relax::RequiredFieldNotSet(concat!("`", stringify!(#name), "` of ", stringify!(#base))))?.try_into()? },
             (true, true) => quote! { #name: value.#name.map(|val| val.try_into()).transpose().ok().flatten() },
         })
     }).collect::<syn::Result<Vec<_>>>()?;
diff --git a/crates/relax/src/lib.rs b/crates/relax/src/lib.rs
index ee00fc3..20e8db8 100644
--- a/crates/relax/src/lib.rs
+++ b/crates/relax/src/lib.rs
@@ -17,7 +17,7 @@ pub struct RequiredFieldNotSet(pub &'static str);
 
 impl std::fmt::Display for RequiredFieldNotSet {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
-        write!(f, "required field `{}` is not set", self.0)
+        write!(f, "required field is not set ({})", self.0)
     }
 }
 impl std::error::Error for RequiredFieldNotSet {}