diff --git a/test/unit_test/test_quantity.cpp b/test/unit_test/test_quantity.cpp
index c13fc0da..3cdb06fe 100644
--- a/test/unit_test/test_quantity.cpp
+++ b/test/unit_test/test_quantity.cpp
@@ -76,10 +76,10 @@ namespace {
 
   // class invariants
 
-  // constexpr quantity<dimension_length, second, int> q;  // should a static_assert
-  // constexpr quantity<dimension_length, metre, quantity<metre, int>> error(0m);  // should trigger a static_assert
+  // constexpr quantity<length, second, int> q;  // should a static_assert
+  // constexpr quantity<length, metre, quantity<metre, int>> error(0m);  // should trigger a static_assert
   // constexpr quantity<int, int, double> error(0);  // should trigger a static_assert
-  // constexpr quantity<dimension_length, unit<dimension_length, std::ratio<-1, 1>>, int> error(0);  // should trigger a static_assert
+  // constexpr quantity<length, unit<length, std::ratio<-1, 1>>, int> error(0);  // should trigger a static_assert
 
   // member types
 
diff --git a/test/unit_test/test_units.cpp b/test/unit_test/test_units.cpp
index 1013f4c6..057d4540 100644
--- a/test/unit_test/test_units.cpp
+++ b/test/unit_test/test_units.cpp
@@ -119,7 +119,7 @@ namespace {
 
   // velocity
 
-  static_assert(std::is_same_v<decltype(1km / 1s), quantity<unit<dimension_velocity, ratio<1000, 1>>, std::int64_t>>);
+  static_assert(std::is_same_v<decltype(1km / 1s), quantity<unit<velocity, ratio<1000, 1>>, std::int64_t>>);
 
   static_assert(10m / 5s == 2mps);
   static_assert(10 / 5s * 1m == 2mps);