diff --git a/tests/integration/test_calibrate_mesmer_m.py b/tests/integration/test_calibrate_mesmer_m.py
index 38a40570..29d22e2c 100644
--- a/tests/integration/test_calibrate_mesmer_m.py
+++ b/tests/integration/test_calibrate_mesmer_m.py
@@ -144,4 +144,4 @@ def mask_and_stack(ds, threshold_land):
         # np.testing.assert_allclose(
         #     expected_params.pt_xi0.values, calibrated_params.pt_xi0.values
         # )
-        xr.testing.assert_allclose(expected_params, calibrated_params, atol=1e-4)
+        xr.testing.assert_allclose(expected_params, calibrated_params, rtol=1e-4)