diff --git a/src/core/include/mp-units/quantity_point.h b/src/core/include/mp-units/quantity_point.h
index 1972ea30..1f4a4940 100644
--- a/src/core/include/mp-units/quantity_point.h
+++ b/src/core/include/mp-units/quantity_point.h
@@ -183,12 +183,19 @@ public:
   }
 
   template<Unit U>
-    requires detail::QuantityConvertibleTo<quantity_type, quantity<::mp_units::reference<quantity_spec, U{}>{}, Rep>>
-  [[nodiscard]] constexpr quantity_point<::mp_units::reference<quantity_spec, U{}>{}, PO, Rep> in(U) const
+    requires detail::QuantityConvertibleTo<quantity_type, quantity<quantity_spec[U{}], Rep>>
+  [[nodiscard]] constexpr quantity_point<quantity_spec[U{}], PO, Rep> in(U) const
   {
     return make_quantity_point<PO>(quantity_ref_from(PO).in(U{}));
   }
 
+  template<Unit U>
+    requires requires(quantity_type q) { value_cast<U{}>(q); }
+  [[nodiscard]] constexpr quantity_point<quantity_spec[U{}], PO, Rep> force_in(U) const
+  {
+    return make_quantity_point<PO>(quantity_ref_from(PO).force_in(U{}));
+  }
+
   // member unary operators
   constexpr quantity_point& operator++()
     requires requires { ++quantity_from_origin_; }