diff --git a/example/strong_angular_quantities.cpp b/example/strong_angular_quantities.cpp
index d7f62dbe..58ee1e2e 100644
--- a/example/strong_angular_quantities.cpp
+++ b/example/strong_angular_quantities.cpp
@@ -37,14 +37,13 @@ int main()
 {
   using namespace mp_units;
   using namespace mp_units::si::unit_symbols;
-  using namespace mp_units::angular::unit_symbols;
   using mp_units::angular::unit_symbols::deg;
   using mp_units::angular::unit_symbols::rad;
 
-  const auto lever = isq_angle::position_vector(20 * cm);
-  const auto force = isq_angle::force(500 * N);
-  const auto angle = isq_angle::angular_measure(90. * deg);
-  const auto torque = isq_angle::torque(lever * force * angular::sin(angle) / (1 * isq_angle::cotes_angle));
+  const quantity lever = isq_angle::position_vector(20 * cm);
+  const quantity force = isq_angle::force(500 * N);
+  const quantity angle = isq_angle::angular_measure(90. * deg);
+  const quantity torque = isq_angle::torque(lever * force * angular::sin(angle) / (1 * isq_angle::cotes_angle));
 
   std::cout << "Applying a perpendicular force of " << force << " to a " << lever << " long lever results in "
             << torque.in(N * m / rad) << " of torque.\n";