diff --git a/tests/core/common/test_optimizable.py b/tests/core/common/test_optimizable.py
index 3ba03ca6d..7024d9128 100644
--- a/tests/core/common/test_optimizable.py
+++ b/tests/core/common/test_optimizable.py
@@ -91,6 +91,7 @@ def test_ase_cell_relaxation(atoms_list, batch, calculator, optimizer_cls):
 
     # optimize atoms one-by-one
     for atoms in atoms_list:
+        print(atoms.cell.array)
         atoms.calc = calculator
         opt = optimizer_cls(UnitCellFilter(atoms, cell_factor=cell_factor))
         opt.run(0.01, 20)
@@ -100,13 +101,10 @@ def test_ase_cell_relaxation(atoms_list, batch, calculator, optimizer_cls):
         assert a1.get_potential_energy() / len(a1) == pytest.approx(
             a2.get_potential_energy() / len(a2), abs=0.05
         )
-
         diff = min_diff(a1.positions, a2.positions, a1.get_cell(), pbc=a1.pbc)
-        npt.assert_allclose(diff, 0, atol=0.01)
+        npt.assert_allclose(diff, 0, atol=0.05, rtol=0.05)
 
         cnorm1 = np.linalg.norm(a1.cell.array, axis=1)
         cnorm2 = np.linalg.norm(a2.cell.array, axis=1)
-        npt.assert_allclose(cnorm1, cnorm2, atol=0.01)
-        npt.assert_allclose(
-            a1.cell.array.T / cnorm1, a2.cell.array.T / cnorm2, rtol=0.01
-        )
+        npt.assert_allclose(cnorm1, cnorm2, atol=0.01, rtol=0.01)
+        npt.assert_allclose(a1.cell.array.T, a2.cell.array.T, rtol=0.01, atol=0.01)