diff --git a/plugins/lb303/lb303.h b/plugins/lb303/lb303.h
index 107f708dc..3d5b31573 100644
--- a/plugins/lb303/lb303.h
+++ b/plugins/lb303/lb303.h
@@ -188,7 +188,6 @@ private:
 
 public slots:
 	void filterChanged( void );
-	void detuneChanged( void );
 	void db24Toggled( void );
 
 private: