1 files changed, 1 insertions, 1 deletions
diff --git a/core/fxge/dib/cfx_bitmapcomposer.h b/core/fxge/dib/cfx_bitmapcomposer.h
index f1bf0e9f32..50a53dbc2b 100644
--- a/core/fxge/dib/cfx_bitmapcomposer.h
+++ b/core/fxge/dib/cfx_bitmapcomposer.h
@@ -18,7 +18,7 @@
 class CFX_ClipRgn;
 class CFX_DIBitmap;
 
-class CFX_BitmapComposer : public ScanlineComposerIface {
+class CFX_BitmapComposer final : public ScanlineComposerIface {
  public:
   CFX_BitmapComposer();
   ~CFX_BitmapComposer() override;