diff --git a/src/plot.cpp b/src/plot.cpp
--- a/src/plot.cpp
+++ b/src/plot.cpp
@@ -277,7 +277,6 @@ void Plot::updateSymbols()
         {
             QwtSymbol* symbol = NULL;
             QwtPlotCurve* curve = static_cast<QwtPlotCurve*>(curves[i]);
-            qDebug() << i;
             if (isSymbolsOn)
             {
                 symbol = new QwtSymbol(QwtSymbol::Ellipse,
@@ -289,3 +288,9 @@ void Plot::updateSymbols()
         }
     }
 }
+
+void Plot::resizeEvent(QResizeEvent * event)
+{
+    QwtPlot::resizeEvent(event);
+    onXScaleChanged();
+}