diff --git a/example/presenterchart/chartview.cpp b/example/presenterchart/chartview.cpp
index 1953a92..d063740 100644
--- a/example/presenterchart/chartview.cpp
+++ b/example/presenterchart/chartview.cpp
@@ -11,15 +11,15 @@ m_index(0)
     QTime now = QTime::currentTime();
     qsrand((uint)now.msec());
 
-    QLineSeries* series0 = new QLineSeries();
+    QLineSeries* series0 = new QLineSeries(this);
     QPen blue(Qt::blue);
     blue.setWidth(3);
     series0->setPen(blue);
-    QLineSeries* series1 = new QLineSeries();
+    QLineSeries* series1 = new QLineSeries(this);
     QPen red(Qt::red);
     red.setWidth(3);
     series1->setPen(red);
-    QLineSeries* series2 = new QLineSeries();
+    QLineSeries* series2 = new QLineSeries(this);
     QPen green(Qt::green);
     green.setWidth(3);
     series2->setPen(green);
diff --git a/src/chartdataset.cpp b/src/chartdataset.cpp
index b7a44c9..0155cf7 100644
--- a/src/chartdataset.cpp
+++ b/src/chartdataset.cpp
@@ -91,6 +91,12 @@ void ChartDataSet::removeSeries(QSeries* series)
     if(i==-1){
         Domain* domain = m_axisDomainMap.take(axis);
         emit axisRemoved(axis);
+        if(axis!=axisY()){
+            if(axis->parent()==this){
+                delete axis;
+                axis=0;
+            }
+        }
         delete domain;
     }
 
@@ -275,7 +281,12 @@ Domain* ChartDataSet::domain(QSeries* series) const
 
 Domain* ChartDataSet::domain(QChartAxis* axis) const
 {
-	return m_axisDomainMap.value(axis);
+    if(axis==axisX()) {
+        return  m_axisDomainMap.value(axisY());
+    }
+    else {
+        return m_axisDomainMap.value(axis);
+    }
 }
 
 QChartAxis* ChartDataSet::axis(QSeries* series) const