diff --git a/src/py4vasp/_calculation/exciton_density.py b/src/py4vasp/_calculation/exciton_density.py
index 03e701c7..3840c7e2 100644
--- a/src/py4vasp/_calculation/exciton_density.py
+++ b/src/py4vasp/_calculation/exciton_density.py
@@ -106,7 +106,7 @@ def to_view(self, selection=None, supercell=None, center=False, **user_options):
             for selection in tree.selections()
         ]
         if center:
-            viewer.shift = (0.5, 0.5, 0.5)
+            viewer.shift = np.array([0.5, 0.5, 0.5])
         return viewer
 
     def _create_map(self):
diff --git a/src/py4vasp/_third_party/view/view.py b/src/py4vasp/_third_party/view/view.py
index d7a3135e..17092fbd 100644
--- a/src/py4vasp/_third_party/view/view.py
+++ b/src/py4vasp/_third_party/view/view.py
@@ -251,7 +251,8 @@ def _show_isosurface(self, widget, trajectory):
     def _shift_quantity(self, quantity):
         if self.shift is None:
             return quantity
-        shift_indices = np.round(quantity.shape * self.shift).astype(np.int32)
+        new_grid_center = np.multiply(quantity.shape, self.shift)
+        shift_indices = np.round(new_grid_center).astype(np.int32)
         return np.roll(quantity, shift_indices, axis=(0, 1, 2))
 
     def _show_arrows_at_atoms(self, widget, trajectory):