diff --git a/src/include/units/bits/external/type_traits.h b/src/include/units/bits/external/type_traits.h
index 34b4ddda..db607b05 100644
--- a/src/include/units/bits/external/type_traits.h
+++ b/src/include/units/bits/external/type_traits.h
@@ -74,6 +74,7 @@ void to_base_specialization_of(const volatile Type<Params...>*);
 }  // namespace detail
 
 template<typename T, template<typename...> typename Type>
+// inline constexpr bool // TODO: Replace with concept when it works with MSVC
 concept is_derived_from_specialization_of = requires { detail::to_base_specialization_of<Type>(std::declval<const volatile T*>()); };
 
 }  // namespace units
diff --git a/src/include/units/concepts.h b/src/include/units/concepts.h
index 27ec3a0b..b165faec 100644
--- a/src/include/units/concepts.h
+++ b/src/include/units/concepts.h
@@ -86,6 +86,7 @@ template<ratio R, typename U>
 void to_base_scaled_unit(const volatile scaled_unit<R, U>*);
 
 template<typename T>
+// inline constexpr bool // TODO: Replace with concept when it works with MSVC
 concept is_derived_from_scaled_unit = requires { to_base_scaled_unit(std::declval<const volatile T*>()); };
 
 }  // namespace detail
@@ -109,6 +110,7 @@ template<basic_fixed_string Symbol, typename U>
 void to_base_base_dimension(const volatile base_dimension<Symbol, U>*);
 
 template<typename T>
+// inline constexpr bool // TODO: Replace with concept when it works with MSVC
 concept is_derived_from_base_dimension = requires { to_base_base_dimension(std::declval<const volatile T*>()); };
 
 }  // namespace detail