diff --git a/dir-structure-macros/src/dir_structure_async/write_to_async_ref.rs b/dir-structure-macros/src/dir_structure_async/write_to_async_ref.rs
index 27754ac..3bd8c3c 100644
--- a/dir-structure-macros/src/dir_structure_async/write_to_async_ref.rs
+++ b/dir-structure-macros/src/dir_structure_async/write_to_async_ref.rs
@@ -93,13 +93,13 @@ pub(super) fn expand_dir_structure_for_field(
                 async_write_ref_future.clauses_ref_vfs = true;
                 let bound = vec![
                     parse_quote! {
-                        for<'trivial> #actual_field_ty_perform: ::dir_structure::traits::asy::WriteToAsyncRef<'vfs, Vfs>
-                    },
-                    parse_quote! {
-                        for<'trivial> <#actual_field_ty_perform as ::dir_structure::traits::asy::WriteToAsyncRef<'vfs, Vfs>>::Future<'fut>: ::std::future::Future<Output = ::dir_structure::error::VfsResult<(), Vfs>> + ::std::marker::Send + ::std::marker::Unpin + 'fut
+                        #actual_field_ty_perform: ::dir_structure::traits::asy::WriteToAsyncRef<'vfs, Vfs>
                     },
                 ];
                 async_write_ref_future.clauses.extend(bound.clone());
+                async_write_ref_future.clauses.push(parse_quote! {
+                    <#actual_field_ty_perform as ::dir_structure::traits::asy::WriteToAsyncRef<'vfs, Vfs>>::Future<'fut>: ::std::future::Future<Output = ::dir_structure::error::VfsResult<(), Vfs>> + ::std::marker::Unpin + 'fut
+                });
                 async_write_ref_future.clauses.push(parse_quote! {
                     'vfs: 'fut
                 });