diff --git a/src/Mod/Fem/femsolver/calculix/calculixtools.py b/src/Mod/Fem/femsolver/calculix/calculixtools.py
index b21d7ca9ec..38dabe1d6e 100644
--- a/src/Mod/Fem/femsolver/calculix/calculixtools.py
+++ b/src/Mod/Fem/femsolver/calculix/calculixtools.py
@@ -31,7 +31,7 @@ import tempfile
 import os
 import shutil
 
-from vtk.util import numpy_support as vtk_np
+from vtkmodules.util import numpy_support as vtk_np
 
 import FreeCAD
 import Fem