diff --git a/src/knemod/signalplotter.cpp b/src/knemod/signalplotter.cpp
index 7176808..067b4ae 100644
--- a/src/knemod/signalplotter.cpp
+++ b/src/knemod/signalplotter.cpp
@@ -429,7 +429,7 @@ void SignalPlotter::paintEvent( TQPaintEvent* )
 
   TQPixmap pm( w, h );
   TQPainter p;
-  p.begin( TQT_TQPAINTDEVICE(&pm), this );
+  p.begin( static_cast<TQPaintDevice*>(&pm), this );
 
   pm.fill( mBackgroundColor );
   /* Draw white line along the bottom and the right side of the