diff --git a/test/unit_test/static/custom_unit_test.cpp b/test/unit_test/static/custom_unit_test.cpp
index 67c92af9..cdd4602f 100644
--- a/test/unit_test/static/custom_unit_test.cpp
+++ b/test/unit_test/static/custom_unit_test.cpp
@@ -63,6 +63,6 @@ namespace {
 struct kilogram_per_second : unit<kilogram_per_second> {};
 struct dim_mass_rate : derived_dimension<dim_mass_rate, kilogram_per_second, units::exponent<dim_mass, 1>, units::exponent<dim_time, -1>> {};
 struct kilogram_per_hour : deduced_unit<kilogram_per_hour, dim_mass_rate, kilogram, hour> {};
-constexpr auto a = 1_q_kg / 1_q_h;
+[[maybe_unused]] constexpr auto a = 1_q_kg / 1_q_h;
 
 }
diff --git a/test/unit_test/static/unit_constants.cpp b/test/unit_test/static/unit_constants.cpp
index f16ae0c4..41e04bfe 100644
--- a/test/unit_test/static/unit_constants.cpp
+++ b/test/unit_test/static/unit_constants.cpp
@@ -82,6 +82,7 @@ static_assert(is_same_v<decltype(120.L * km / 2 / h), decltype(60._q_km_per_h)>)
 
 static_assert(1. / 4 * m2 == 1._q_m2 / 4);
 
+#if !defined(COMP_CLANG) // -Wshadow
 static_assert([] {
   Speed auto v0 = 10 * m / s;
   signed s = 2;  // hides  ^
@@ -89,5 +90,6 @@ static_assert([] {
   /*      */ v0 = 10 * m / ::s;
   return !is_same_v<decltype(v0), decltype(v)>;
 }());
+#endif
 
 int main() {}