diff --git a/tests/test_fullchain.py b/tests/test_fullchain.py
index f64284dc..0e4ba827 100644
--- a/tests/test_fullchain.py
+++ b/tests/test_fullchain.py
@@ -226,7 +226,7 @@ def test_ctio_fullchain():
     nsigma = 2
     labels = ["A1_T", "A2_T", "VAOD_T", "OZONE_T", "PWV_T"]
     indices = [0, 1, 3, 5, 6]
-    A1, A2, A3, aerosols, angstrom_exponent, ozone, pwv, D, shift_x, shift_y, shift_t, B, Astar, *psf_poly_params = w.params.values
+    A1, A2, A3, aerosols, angstrom_exponent, ozone, pwv, B, Astar, D, shift_x, shift_y, shift_t, *psf_poly_params = w.params.values
     ipar = w.params.get_free_parameters()  # non fixed param indices
     cov_indices = [list(ipar).index(k) for k in indices]  # non fixed param indices in cov matrix
     assert w.costs[-1] / w.data.size < 1e-3