diff --git a/crates/relax-macros/src/lib.rs b/crates/relax-macros/src/lib.rs
index f21baaf..372f2ff 100644
--- a/crates/relax-macros/src/lib.rs
+++ b/crates/relax-macros/src/lib.rs
@@ -169,9 +169,9 @@ 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::MissingRequiredField(stringify!(#name)))? },
+            (false, false) => quote! { #name: value.#name.ok_or(::relax::RequiredFieldNotSet(stringify!(#name)))? },
             (false, true) => quote! { #name: value.#name },
-            (true, false) => quote! { #name: value.#name.ok_or(::relax::MissingRequiredField(stringify!(#name)))?.try_into()? },
+            (true, false) => quote! { #name: value.#name.ok_or(::relax::RequiredFieldNotSet(stringify!(#name)))?.try_into()? },
             (true, true) => quote! { #name: value.#name.map(|val| val.try_into()).transpose().ok().flatten() },
         })
     }).collect::<syn::Result<Vec<_>>>()?;
@@ -211,7 +211,7 @@ fn derive_impl(input: syn::DeriveInput) -> syn::Result<TokenStream> {
         }
 
         impl #generics ::std::convert::TryFrom<#partial #generics> for #base #generics {
-            type Error = ::relax::MissingRequiredField;
+            type Error = ::relax::RequiredFieldNotSet;
 
             fn try_from(value: #partial) -> ::std::result::Result<Self, Self::Error> {
                 Ok(Self{