diff --git a/python/gtsam/tests/test_ShonanAveraging.py b/python/gtsam/tests/test_ShonanAveraging.py
index 08bbe5191..8c70df5df 100644
--- a/python/gtsam/tests/test_ShonanAveraging.py
+++ b/python/gtsam/tests/test_ShonanAveraging.py
@@ -197,7 +197,9 @@ class TestShonanAveraging(GtsamTestCase):
         wRi_list = [result_values.atRot2(i) for i in range(num_images)]
         thetas_deg = np.array([wRi.degrees() for wRi in wRi_list])
         thetas_deg -= max(thetas_deg)
-        expected_thetas_deg = np.array([0.0, -270.0, 0.0])
+        # map all angles to [0,360)
+        thetas_deg = thetas_deg % 360
+        expected_thetas_deg = np.array([0.0, 90.0, 0.0])
         np.testing.assert_allclose(thetas_deg, expected_thetas_deg)