diff --git a/win/rfb_win32/Clipboard.h b/win/rfb_win32/Clipboard.h
index b79768f..498f75f 100644
--- a/win/rfb_win32/Clipboard.h
+++ b/win/rfb_win32/Clipboard.h
@@ -40,6 +40,7 @@
       class Notifier {
       public:
         virtual void notifyClipboardChanged(const char* text, int len) = 0;
+        virtual ~Notifier() {};
       };
 
       Clipboard();