1 files changed, 7 insertions, 4 deletions
diff --git a/src/gui/windows/selldialog.h b/src/gui/windows/selldialog.h
index 0cfffbf38..81aaabbb2 100644
--- a/src/gui/windows/selldialog.h
+++ b/src/gui/windows/selldialog.h
@@ -41,9 +41,9 @@ class Slider;
  *
  * \ingroup Interface
  */
-class SellDialog final : public Window,
-                         private ActionListener,
-                         private SelectionListener
+class SellDialog notfinal : public Window,
+                            public ActionListener,
+                            private SelectionListener
 {
     public:
         /**
@@ -113,7 +113,7 @@ class SellDialog final : public Window,
          */
         static void closeAll();
 
-    private:
+    protected:
         typedef std::list<SellDialog*> DialogList;
         static DialogList instances;
 
@@ -122,6 +122,9 @@ class SellDialog final : public Window,
          */
         void updateButtonsAndLabels();
 
+        virtual void sellAction(const ActionEvent &event A_UNUSED)
+        { }
+
         std::string mNick;
 
         Button *mSellButton;