diff --git a/canvas/source/directx/dx_9rm.cxx b/canvas/source/directx/dx_9rm.cxx
index f1557af69961..872b537aa769 100644
--- a/canvas/source/directx/dx_9rm.cxx
+++ b/canvas/source/directx/dx_9rm.cxx
@@ -120,7 +120,7 @@ namespace dxcanvas
 
 
         /// Default implementation of IDXRenderModule
-        class DXRenderModule : public IDXRenderModule
+        class DXRenderModule final: public IDXRenderModule
         {
         public:
             explicit DXRenderModule( const vcl::Window& rWindow );
diff --git a/fpicker/source/win32/asyncrequests.hxx b/fpicker/source/win32/asyncrequests.hxx
index c1a3f569fbfa..5fbd7dde848f 100644
--- a/fpicker/source/win32/asyncrequests.hxx
+++ b/fpicker/source/win32/asyncrequests.hxx
@@ -135,7 +135,7 @@ typedef std::shared_ptr< RequestHandler > RequestHandlerRef;
 
 /** @todo document me
  */
-class AsyncRequests : private ::cppu::BaseMutex
+class AsyncRequests final: private ::cppu::BaseMutex
                     , public  ::osl::Thread
 {
     public:
diff --git a/vcl/inc/win/salbmp.h b/vcl/inc/win/salbmp.h
index 7f172d21af82..05aed0ee9d30 100644
--- a/vcl/inc/win/salbmp.h
+++ b/vcl/inc/win/salbmp.h
@@ -33,7 +33,7 @@ class   BitmapPalette;
 class   SalGraphics;
 namespace Gdiplus { class Bitmap; }
 
-class WinSalBitmap : public SalBitmap, public basegfx::SystemDependentDataHolder
+class WinSalBitmap final: public SalBitmap, public basegfx::SystemDependentDataHolder
 {
 private:
     Size                maSize;
diff --git a/vcl/inc/win/salframe.h b/vcl/inc/win/salframe.h
index 8e94f384b523..76b3e1e69f54 100644
--- a/vcl/inc/win/salframe.h
+++ b/vcl/inc/win/salframe.h
@@ -27,7 +27,7 @@
 class WinSalGraphics;
 
 
-class WinSalFrame : public SalFrame
+class WinSalFrame final: public SalFrame
 {
 public:
     HWND                    mhWnd;                  // Window handle