diff --git a/include/kumi/tuple.hpp b/include/kumi/tuple.hpp
index fc50452..6fa76b3 100644
--- a/include/kumi/tuple.hpp
+++ b/include/kumi/tuple.hpp
@@ -638,7 +638,7 @@ namespace kumi
   template<std::size_t I0, product_type Tuple>
   requires(I0 <= size_v<Tuple>)
   [[nodiscard]] constexpr auto split( Tuple const& t
-                                    , [[maybe_unsued]] index_t<I0> const& i0
+                                    , [[maybe_unused]] index_t<I0> const& i0
                                     ) noexcept
   {
     return kumi::make_tuple(extract(t,index<0>, index<I0>), extract(t,index<I0>));