diff --git a/src/animations/xyanimation.cpp b/src/animations/xyanimation.cpp
index a9a919d..b95168e 100644
--- a/src/animations/xyanimation.cpp
+++ b/src/animations/xyanimation.cpp
@@ -55,7 +55,8 @@ QVariant XYAnimation::interpolated(const QVariant &start, const QVariant & end, 
 
         case MoveDownAnimation: {
 
-            Q_ASSERT(startVector.count() == endVector.count());
+            if(startVector.count() != endVector.count()) break;
+
             for(int i =0;i< startVector.count();i++) {
                 qreal x = startVector[i].x() + ((endVector[i].x()- startVector[i].x()) * progress);
                 qreal y = startVector[i].y() + ((endVector[i].y()- startVector[i].y()) * progress);
diff --git a/src/xychart/xychartitem.cpp b/src/xychart/xychartitem.cpp
index 57488a4..a383c67 100644
--- a/src/xychart/xychartitem.cpp
+++ b/src/xychart/xychartitem.cpp
@@ -94,7 +94,7 @@ void XYChartItem::handlePointAdded(int index)
 
     QPointF point = calculateGeometryPoint(index);
     QVector<QPointF> points = m_points;
-    points.insert(index,point);
+    points.insert(index-1,point);
     updateLayout(points);
     update();
 }
@@ -102,7 +102,6 @@ void XYChartItem::handlePointRemoved(int index)
 {
     Q_ASSERT(index<m_series->count() + 1);
     Q_ASSERT(index>=0);
-//    QPointF point = calculateGeometryPoint(index);
     QVector<QPointF> points = m_points;
     points.remove(index);
     updateLayout(points);