diff --git a/src/sisl/io/siesta/tests/test_tshs.py b/src/sisl/io/siesta/tests/test_tshs.py
index 6f27595c1..b2edadddb 100644
--- a/src/sisl/io/siesta/tests/test_tshs.py
+++ b/src/sisl/io/siesta/tests/test_tshs.py
@@ -100,7 +100,10 @@ def test_tshs_warn(sisl_files):
     # check cell
     geom = si.read_geometry()
     geom.lattice.cell[:, :] = 1.0
-    with pytest.warns(sisl.SislWarning, match="lattice vectors"):
+    with (
+        pytest.warns(sisl.SislWarning, match="lattice vectors"),
+        pytest.raises(ValueError, match="math domain error"),
+    ):
         si.read_hamiltonian(geometry=geom)
 
     # check atomic coordinates