diff --git a/test/unit_test/static/reference_test.cpp b/test/unit_test/static/reference_test.cpp
index 7ab7de56..010b77f5 100644
--- a/test/unit_test/static/reference_test.cpp
+++ b/test/unit_test/static/reference_test.cpp
@@ -54,17 +54,12 @@ QUANTITY_SPEC_(arc_length, length);
 QUANTITY_SPEC_(frequency, 1 / time);
 QUANTITY_SPEC_(activity, 1 / time);
 QUANTITY_SPEC_(area, length* length);
-QUANTITY_SPEC_(volume, area* length);
 QUANTITY_SPEC_(angular_measure, dimensionless, arc_length / radius, is_kind);
 QUANTITY_SPEC_(solid_angular_measure, dimensionless, area / pow<2>(radius), is_kind);
 QUANTITY_SPEC_(speed, length / time);
 QUANTITY_SPEC_(acceleration, speed / time);
 QUANTITY_SPEC_(force, mass* acceleration);
-QUANTITY_SPEC_(moment_of_force, length* force);
-QUANTITY_SPEC_(torque, moment_of_force);
 QUANTITY_SPEC_(power, force* speed);
-QUANTITY_SPEC_(efficiency, power / power);
-QUANTITY_SPEC_(energy, force* length);
 QUANTITY_SPEC_(storage_capacity, dimensionless, is_kind);
 
 // base units
@@ -78,13 +73,10 @@ namespace nu {
 
 inline constexpr struct second_ : named_unit<"s"> {} second;
 inline constexpr struct minute_ : named_unit<"min", mag<60> * second> {} minute;
-inline constexpr struct gram_ : named_unit<"g"> {} gram;
-inline constexpr struct kilogram_ : decltype(si::kilo<gram>) {} kilogram;
 
 inline constexpr struct time : system_reference<time_{}, second> {} time;
 inline constexpr struct length : system_reference<length_{}, second> {} length;
 inline constexpr struct speed : system_reference<speed_{}, second / second> {} speed;
-inline constexpr struct force : system_reference<force_{}, kilogram / second> {} force;
 
 }
 
@@ -94,7 +86,6 @@ inline constexpr struct steradian_ : named_unit<"sr", square(metre) / square(met
 inline constexpr struct hertz_ : named_unit<"Hz", 1 / second, kind_of<frequency>> {} hertz;
 inline constexpr struct becquerel_ : named_unit<"Bq", 1 / second, kind_of<activity>> {} becquerel;
 inline constexpr struct newton_ : named_unit<"N", kilogram * metre / square(second)> {} newton;
-inline constexpr struct pascal_ : named_unit<"Pa", newton / square(metre)> {} pascal;
 inline constexpr struct joule_ : named_unit<"J", newton * metre> {} joule;
 inline constexpr struct watt_ : named_unit<"W", joule / second> {} watt;
 
diff --git a/test/unit_test/static/unit_test.cpp b/test/unit_test/static/unit_test.cpp
index 9c9df682..ff5ab4ef 100644
--- a/test/unit_test/static/unit_test.cpp
+++ b/test/unit_test/static/unit_test.cpp
@@ -71,18 +71,9 @@ inline constexpr struct degree_Celsius_ : named_unit<basic_symbol_text{"°C", "`
 
 inline constexpr struct minute_ : named_unit<"min", mag<60> * second> {} minute;
 inline constexpr struct hour_ : named_unit<"h", mag<60> * minute> {} hour;
-inline constexpr struct day_ : named_unit<"d", mag<24> * hour> {} day;
-inline constexpr struct astronomical_unit_ : named_unit<"au", mag<149'597'870'700> * metre> {} astronomical_unit;
 inline constexpr struct degree_ : named_unit<basic_symbol_text{"°", "deg"}, mag_pi / mag<180> * radian> {} degree;
-inline constexpr struct are_ : named_unit<"a", square(si::deca<metre>)> {} are;
-inline constexpr struct hectare_ : decltype(si::hecto<are>) {} hectare;
-inline constexpr struct litre_ : named_unit<"l", cubic(si::deci<metre>)> {} litre;
-inline constexpr struct tonne_ : named_unit<"t", mag<1000> * kilogram> {} tonne;
-inline constexpr struct dalton_ : named_unit<"Da", mag<ratio{16'605'390'666'050, 10'000'000'000'000}> * mag_power<10, -27> * kilogram> {} dalton;
-inline constexpr struct electronvolt_ : named_unit<"eV", mag<ratio{1'602'176'634, 1'000'000'000}> * mag_power<10, -19> * joule> {} electronvolt;
 
 inline constexpr struct yard_ : named_unit<"yd", mag<ratio{9'144, 10'000}> * metre> {} yard;
-inline constexpr struct foot_ : named_unit<"ft", mag<ratio(1, 3)> * yard> {} foot;
 inline constexpr struct mile_ : named_unit<"mi", mag<1760> * yard> {} mile;
 
 inline constexpr struct kilometre_ : decltype(si::kilo<metre>) {} kilometre;
@@ -119,7 +110,6 @@ static_assert(detail::NamedUnit<minute_>);
 static_assert(detail::NamedUnit<radian_>);
 static_assert(!detail::NamedUnit<kilogram_>);
 static_assert(!detail::NamedUnit<kilojoule_>);
-static_assert(!detail::NamedUnit<hectare_>);
 static_assert(!detail::NamedUnit<decltype(si::kilo<gram>)>);
 static_assert(!detail::NamedUnit<decltype(square(metre))>);
 static_assert(!detail::NamedUnit<decltype(cubic(metre))>);