diff --git a/include/xo/unit/Quantity.hpp b/include/xo/unit/Quantity.hpp
index 795e2795..2d4aa352 100644
--- a/include/xo/unit/Quantity.hpp
+++ b/include/xo/unit/Quantity.hpp
@@ -98,7 +98,7 @@ namespace xo {
                 using r_int2x_type = std::common_type_t<typename Quantity2::ratio_int2x_type,
                                                         typename Quantity2::ratio_int2x_type>;
 
-                auto rr = detail::nu_product<r_int_type, r_int2x_type>(x.unit(), y.unit());
+                auto rr = detail::su_product<r_int_type, r_int2x_type>(x.unit(), y.unit());
 
                 r_repr_type r_scale = (::sqrt(rr.outer_scale_sq_)
                                        * rr.outer_scale_exact_.template to<r_repr_type>()
diff --git a/include/xo/unit/scaled_unit.hpp b/include/xo/unit/scaled_unit.hpp
index 41cd4d7e..3b506b46 100644
--- a/include/xo/unit/scaled_unit.hpp
+++ b/include/xo/unit/scaled_unit.hpp
@@ -102,7 +102,7 @@ namespace xo {
             template <typename Int, typename Int2x = width2x<Int>>
             constexpr
             scaled_unit<Int>
-            nu_product(const natural_unit<Int> & lhs_bpu_array,
+            su_product(const natural_unit<Int> & lhs_bpu_array,
                        const natural_unit<Int> & rhs_bpu_array)
             {
                 natural_unit<Int2x> prod = lhs_bpu_array.template to_repr<Int2x>();
@@ -167,7 +167,7 @@ namespace xo {
         operator* (const scaled_unit<Int> & x_unit,
                    const scaled_unit<Int> & y_unit)
         {
-            auto rr = detail::nu_product<Int, Int2x>(x_unit.natural_unit_,
+            auto rr = detail::su_product<Int, Int2x>(x_unit.natural_unit_,
                                                      y_unit.natural_unit_);
 
             return (scaled_unit<Int>
diff --git a/utest/unit.test.cpp b/utest/unit.test.cpp
index 458a15a2..41149b4a 100644
--- a/utest/unit.test.cpp
+++ b/utest/unit.test.cpp
@@ -41,7 +41,7 @@ namespace xo {
         using xo::qty::detail::bpu2_product;
         using xo::qty::natural_unit;
         using xo::qty::bpu_array_maker;
-        using xo::qty::detail::nu_product;
+        using xo::qty::detail::su_product;
         using xo::qty::detail::nu_bpu_product;
         using xo::qty::detail::nu_ratio_inplace;
         using xo::qty::detail::su_ratio;
@@ -729,7 +729,7 @@ namespace xo {
 
                 static_assert(w.n_bpu() == 1);
 
-                constexpr auto prod_rr = nu_product<int64_t, __int128_t>(v, w);
+                constexpr auto prod_rr = su_product<int64_t, __int128_t>(v, w);
 
                 log && log(xtag("prod_rr.bpu_array", prod_rr.natural_unit_));
                 log && log(xtag("prod_rr.outer_scale_exact", prod_rr.outer_scale_exact_));