diff --git a/include/boost/variant2/variant.hpp b/include/boost/variant2/variant.hpp
index 12e58ab..7ecc25f 100644
--- a/include/boost/variant2/variant.hpp
+++ b/include/boost/variant2/variant.hpp
@@ -224,8 +224,16 @@ template<std::size_t I, class... T> struct variant_alternative<I, variant<T...>
 namespace detail
 {
 
+#if defined( BOOST_MP11_VERSION ) && BOOST_MP11_VERSION >= 107000
+
 template<class I, class T, class Q> using var_alt_impl = mp11::mp_invoke_q<Q, variant_alternative_t<I::value, T>>;
 
+#else
+
+template<class I, class T, class Q> using var_alt_impl = mp11::mp_invoke<Q, variant_alternative_t<I::value, T>>;
+
+#endif
+
 } // namespace detail
 
 template<std::size_t I, class T> struct variant_alternative