diff --git a/gr-qtgui/lib/WaterfallDisplayPlot.cc b/gr-qtgui/lib/WaterfallDisplayPlot.cc
index 7abd9ae..94a8e62 100644
--- a/gr-qtgui/lib/WaterfallDisplayPlot.cc
+++ b/gr-qtgui/lib/WaterfallDisplayPlot.cc
@@ -318,7 +318,7 @@ WaterfallDisplayPlot::WaterfallDisplayPlot(QWidget* parent)

 #else
   d_spectrogram = new QwtPlotSpectrogram("Spectrogram");
-  d_spectrogram->setData(*d_data);
+  d_spectrogram->setData(d_data);
   d_spectrogram->setDisplayMode(QwtPlotSpectrogram::ImageMode, true);
   d_spectrogram->setColorMap(new ColorMap_MultiColor());
 #endif
diff --git a/gr-qtgui/lib/plot_waterfall.cc b/gr-qtgui/lib/plot_waterfall.cc
index 527eea2..dafb539 100644
--- a/gr-qtgui/lib/plot_waterfall.cc
+++ b/gr-qtgui/lib/plot_waterfall.cc
@@ -180,12 +180,13 @@ QImage PlotWaterfall::renderImage(const QwtScaleMap &xMap,
     if ( area.isEmpty() )
         return QImage();

-    QRect rect = transform(xMap, yMap, area);
+    QRectF rectF = QwtScaleMap::transform(xMap, yMap, area);
+    QRect rect(rectF.x(), rectF.y(), rectF.width(), rectF.height());

     QwtScaleMap xxMap = xMap;
     QwtScaleMap yyMap = yMap;

-    const QSize res = d_data->data->rasterHint(area);
+    const QSize res;//I dont even know = d_data->data->rasterHint(area);
     if ( res.isValid() )
     {
         /*
diff --git a/gr-qtgui/lib/plot_waterfall.h b/gr-qtgui/lib/plot_waterfall.h
index d4cb8d6..dae9efb 100644
--- a/gr-qtgui/lib/plot_waterfall.h
+++ b/gr-qtgui/lib/plot_waterfall.h
@@ -37,9 +37,9 @@ public:

 #if QWT_VERSION < 0x060000
     virtual QwtDoubleRect boundingRect() const;
-#endif

     virtual QSize rasterHint(const QwtDoubleRect &) const;
+#endif

     virtual int rtti() const;