diff --git a/libcxx/include/__ranges/view_interface.h b/libcxx/include/__ranges/view_interface.h
--- a/libcxx/include/__ranges/view_interface.h
+++ b/libcxx/include/__ranges/view_interface.h
@@ -38,16 +38,29 @@
 template<class _Tp>
 void __implicitly_convert_to(type_identity_t<_Tp>) noexcept;
 
+template<class _Derived>
+  requires is_class_v<_Derived> && same_as<_Derived, remove_cv_t<_Derived>>
+class view_interface;
+
+template<class _Tp>
+concept __valid_view = requires {
+  sizeof(_Tp);
+  derived_from<_Tp, view_interface<_Tp>>;
+  view<_Tp>;
+};
+
 template<class _Derived>
   requires is_class_v<_Derived> && same_as<_Derived, remove_cv_t<_Derived>>
 class view_interface : public view_base {
   _LIBCPP_HIDE_FROM_ABI
   constexpr _Derived& __derived() noexcept {
+    static_assert(__valid_view<_Derived>, "The derived type must model derived_from<view_interface<D>> and view");
     return static_cast<_Derived&>(*this);
   }
 
   _LIBCPP_HIDE_FROM_ABI
   constexpr _Derived const& __derived() const noexcept {
+    static_assert(__valid_view<_Derived>, "The derived type must model derived_from<view_interface<D>> and view");
     return static_cast<_Derived const&>(*this);
   }