diff --git a/src/core/include/mp-units/framework/representation_concepts.h b/src/core/include/mp-units/framework/representation_concepts.h
index 0a6950d9..82f403ab 100644
--- a/src/core/include/mp-units/framework/representation_concepts.h
+++ b/src/core/include/mp-units/framework/representation_concepts.h
@@ -310,7 +310,7 @@ concept VectorRepresentation = (!is_quantity<T>) && Vector<T> && requires(const
 
 MP_UNITS_EXPORT template<typename T>
 concept Representation = detail::ScalarRepresentation<T> || detail::ComplexRepresentation<T> ||
-                         detail::VectorRepresentation<T>;  // || detail::TensorRepresentation<T>; */
+                         detail::VectorRepresentation<T>;  // || detail::TensorRepresentation<T>;
 
 namespace detail {