diff --git a/include/xo/unit/natural_unit.hpp b/include/xo/unit/natural_unit.hpp
index d8812cd9..b24cbc19 100644
--- a/include/xo/unit/natural_unit.hpp
+++ b/include/xo/unit/natural_unit.hpp
@@ -37,7 +37,7 @@ namespace xo {
         struct nu_maker {
             template <typename... Ts>
             static constexpr natural_unit<Int>
-            make_bpu_array(Ts... args) {
+            make_nu(Ts... args) {
                 natural_unit<Int> bpu_array;
                 detail::push_bpu_array(&bpu_array, args...);
                 return bpu_array;
@@ -64,7 +64,7 @@ namespace xo {
             constexpr natural_unit() : n_bpu_{0} {}
 
             static constexpr natural_unit from_bu(basis_unit bu) {
-                return nu_maker<Int>::make_bpu_array(make_unit_power<Int>(bu));
+                return nu_maker<Int>::make_nu(make_unit_power<Int>(bu));
             }
 
             constexpr std::size_t n_bpu() const { return n_bpu_; }