diff --git a/src/sisl/_core/geometry.py b/src/sisl/_core/geometry.py
index 8cc21e2fd..9d33988cf 100644
--- a/src/sisl/_core/geometry.py
+++ b/src/sisl/_core/geometry.py
@@ -3721,7 +3721,7 @@ def _orbital_values(self, grid_shape: tuple[int, int, int]):
         # supercell by add_R in each direction.
         # For extremely skewed lattices this will be way too much, hence we make
         # them square.
-        o = self.lattice.to.Cuboid(True)
+        o = self.lattice.to.Cuboid(orthogonal=True)
         lattice = Lattice(o._v + np.diag(2 * add_R), origin=o.origin - add_R)
 
         # Retrieve all atoms within the grid supercell