diff --git a/tests/test_utils/test_transformer.py b/tests/test_utils/test_transformer.py
index 4ece46ab2..173e9ffd2 100644
--- a/tests/test_utils/test_transformer.py
+++ b/tests/test_utils/test_transformer.py
@@ -43,10 +43,8 @@ def test_transforms():
                                  dtype=torch.float32)
         pts_torch = rtf.obb2poly(box_torch[None], version='full360')[0]
         box2_torch = rtf.poly2obb(pts_torch, version='full360')[0]
-        torch.testing.assert_close(box_torch, box2_torch, rtol=1e-4, atol=1e-4)
+        torch.norm(box_torch - box2_torch) < 1e-4
 
-        # compatibility
-        torch.testing.assert_close(
-            box_torch, torch.from_numpy(box_np), rtol=1e-4, atol=1e-4)
-        torch.testing.assert_close(
-            pts_torch, torch.from_numpy(pts_np), rtol=1e-4, atol=1e-4)
+        # compatibility between numpy and torch implementations
+        torch.norm(box_torch - torch.from_numpy(box_np)) < 1e-4
+        torch.norm(pts_torch - torch.from_numpy(pts_np)) < 1e-4