diff --git a/stl/inc/type_traits b/stl/inc/type_traits
index 7a1e0fab0e2..995c15966ce 100644
--- a/stl/inc/type_traits
+++ b/stl/inc/type_traits
@@ -1317,7 +1317,7 @@ struct _Identity {
     using type = _Ty;
 };
 template <class _Ty>
-using _Identity_t = typename _Identity<_Ty>::type;
+using _Identity_t _MSVC_KNOWN_SEMANTICS = typename _Identity<_Ty>::type;
 
 #if _HAS_CXX20
 template <class _Ty>
diff --git a/stl/inc/xtr1common b/stl/inc/xtr1common
index 80e7615e30c..93e7e7abd33 100644
--- a/stl/inc/xtr1common
+++ b/stl/inc/xtr1common
@@ -220,7 +220,7 @@ template <class _Ty>
 using _Const_thru_ref = typename remove_reference<_Ty>::_Const_thru_ref_type;
 
 template <class _Ty>
-using _Remove_cvref_t = remove_cv_t<remove_reference_t<_Ty>>;
+using _Remove_cvref_t _MSVC_KNOWN_SEMANTICS = remove_cv_t<remove_reference_t<_Ty>>;
 
 #if _HAS_CXX20
 template <class _Ty>