diff --git a/src/Vtk/vtkQViewport.cpp b/src/Vtk/vtkQViewport.cpp
index f890bd4..f9baf19 100644
--- a/src/Vtk/vtkQViewport.cpp
+++ b/src/Vtk/vtkQViewport.cpp
@@ -81,7 +81,6 @@ void QViewport::SetupPipeline()
 
 void QViewport::Render()
 {
-    UpdateGrid();
     if (m_VtkWidget && m_VtkWidget->renderWindow())
         m_VtkWidget->renderWindow()->Render();
 }