diff --git a/field.py b/field.py
index f10d13b..72fc20a 100644
--- a/field.py
+++ b/field.py
@@ -273,7 +273,8 @@ class Field3d:
         mesh.dimensions = self.dim(axis=None)
         mesh.origin     = self.origin 
         mesh.spacing    = self.spacing
-        mesh.point_arrays['data'] = self.data.flatten(order='F')
+        # order needs to be F no matter how array is stored in memory
+        mesh.point_arrays['data'] = self.data.ravel(order='F') 
         return mesh
 
     def vtk_contour(self,val):