diff --git a/invesalius/data/viewer_volume.py b/invesalius/data/viewer_volume.py
index 4a0fd75..c21da71 100755
--- a/invesalius/data/viewer_volume.py
+++ b/invesalius/data/viewer_volume.py
@@ -82,6 +82,7 @@ class Viewer(wx.Panel):
             self.last_x, self.last_y = mouse_x, mouse_y
             ps.Publisher().sendMessage('Set raycasting relative window and level',
                 (diff_x, diff_y))
+            ps.Publisher().sendMessage('Refresh raycasting widget points', None)
             self.interactor.Render()
 
     def OnClick(self, obj, evt):
--
libgit2 0.21.2