diff --git a/src/linechart/linechartitem.cpp b/src/linechart/linechartitem.cpp
index 9ead231..1243fff 100644
--- a/src/linechart/linechartitem.cpp
+++ b/src/linechart/linechartitem.cpp
@@ -56,7 +56,9 @@ void LineChartItem::updateGeometry()
 
     if(points.size()==0)
     {
+        prepareGeometryChange();
         m_path = QPainterPath();
+        m_rect = QRect();
         return;
     }