diff --git a/src/CPP/Windows/Handle.h b/src/CPP/Windows/Handle.h
index eeb83c2..d6fbf63 100644
--- a/src/CPP/Windows/Handle.h
+++ b/src/CPP/Windows/Handle.h
@@ -7,7 +7,7 @@
 
 namespace NWindows {
 
-class CHandle  MY_UNCOPYABLE
+class CHandle Z7_final MY_UNCOPYABLE
 {
 protected:
   HANDLE _handle;
diff --git a/src/CPP/Windows/PropVariant.h b/src/CPP/Windows/PropVariant.h
index 004190b..95d3c98 100644
--- a/src/CPP/Windows/PropVariant.h
+++ b/src/CPP/Windows/PropVariant.h
@@ -46,7 +46,7 @@ inline void PropVarEm_Set_Bool(PROPVARIANT *p, bool b) throw()
 }
 
 
-class CPropVariant : public tagPROPVARIANT
+class CPropVariant Z7_final: public tagPROPVARIANT
 {
   // ---------- forbidden functions ----------
   CPropVariant(const char *s);
diff --git a/src/CPP/Windows/Synchronization.h b/src/CPP/Windows/Synchronization.h
index 84df136..63935cd 100644
--- a/src/CPP/Windows/Synchronization.h
+++ b/src/CPP/Windows/Synchronization.h
@@ -51,7 +51,7 @@ class CBaseEvent  MY_UNCOPYABLE
   WRes Lock() { return Event_Wait(&_object); }
 };
 
-class CManualResetEvent: public CBaseEvent
+class CManualResetEvent Z7_final: public CBaseEvent
 {
 public:
   WRes Create(bool initiallyOwn = false)
@@ -72,7 +72,7 @@ class CManualResetEvent: public CBaseEvent
   #endif
 };
 
-class CAutoResetEvent: public CBaseEvent
+class CAutoResetEvent Z7_final: public CBaseEvent
 {
 public:
   WRes Create()
@@ -135,7 +135,7 @@ class CMutexLock  MY_UNCOPYABLE
 */
 
 
-class CSemaphore  MY_UNCOPYABLE
+class CSemaphore Z7_final MY_UNCOPYABLE
 {
   ::CSemaphore _object;
 public:
@@ -162,7 +162,7 @@ class CSemaphore  MY_UNCOPYABLE
   WRes Lock() { return Semaphore_Wait(&_object); }
 };
 
-class CCriticalSection  MY_UNCOPYABLE
+class CCriticalSection Z7_final MY_UNCOPYABLE
 {
   ::CCriticalSection _object;
 public:
@@ -208,7 +208,7 @@ inline DWORD WINAPI WaitForMultiObj_Any_Infinite(DWORD count, const CHandle_WFMO
 #define SYNC_PARAM_DECL(x) NWindows::NSynchronization::CSynchro *x
 #define SYNC_OBJ_DECL(x) NWindows::NSynchronization::CSynchro x;
 
-class CSynchro  MY_UNCOPYABLE
+class CSynchro Z7_final MY_UNCOPYABLE
 {
   pthread_mutex_t _mutex;
   pthread_cond_t _cond;
diff --git a/src/CPP/Windows/System.h b/src/CPP/Windows/System.h
index bf63521..c182d84 100644
--- a/src/CPP/Windows/System.h
+++ b/src/CPP/Windows/System.h
@@ -18,7 +18,7 @@ namespace NSystem {
 
 UInt32 CountAffinity(DWORD_PTR mask);
 
-struct CProcessAffinity
+struct CProcessAffinity Z7_final
 {
   // UInt32 numProcessThreads;
   // UInt32 numSysThreads;
@@ -57,7 +57,7 @@ struct CProcessAffinity
 
 #else // WIN32
 
-struct CProcessAffinity
+struct CProcessAffinity Z7_final
 {
   UInt32 numSysThreads;
 
diff --git a/src/CPP/Windows/Thread.h b/src/CPP/Windows/Thread.h
index 013e5fd..ad68fad 100644
--- a/src/CPP/Windows/Thread.h
+++ b/src/CPP/Windows/Thread.h
@@ -9,7 +9,7 @@
 
 namespace NWindows {
 
-class CThread  MY_UNCOPYABLE
+class CThread Z7_final MY_UNCOPYABLE
 {
   ::CThread thread;
 public: