diff --git a/include/level_object.h b/include/level_object.h
index dc9d9bc3b..8ba10e5be 100644
--- a/include/level_object.h
+++ b/include/level_object.h
@@ -50,6 +50,9 @@ public:
 
 	virtual void setLevel( int _level ) = 0;
 
+	virtual QString levelToLabel( int _level ) = 0;
+	virtual int labelToLevel( QString _label ) = 0;
+
 
 protected:
 	int m_minLevel;