diff --git a/modules/paint/actions/brighten_action.h b/modules/paint/actions/brighten_action.h
index e4249caf1..b5e890d87 100644
--- a/modules/paint/actions/brighten_action.h
+++ b/modules/paint/actions/brighten_action.h
@@ -38,6 +38,8 @@ public:
 
 	void do_action_old(PaintCanvasOld *canvas, const Array &data);
 
+	void _do_action(const Array &data);
+
 	BrightenAction();
 	~BrightenAction();
 
diff --git a/modules/paint/actions/brush_action.h b/modules/paint/actions/brush_action.h
index 170af366c..9afe80979 100644
--- a/modules/paint/actions/brush_action.h
+++ b/modules/paint/actions/brush_action.h
@@ -35,6 +35,8 @@ class BrushAction : public PaintAction {
 public:
 	void do_action_old(PaintCanvasOld *canvas, const Array &data);
 
+	void _do_action(const Array &data);
+
 	BrushAction();
 	~BrushAction();