diff --git a/tests/test_sampling.py b/tests/test_sampling.py
index d2fc0b1..e8ebed0 100644
--- a/tests/test_sampling.py
+++ b/tests/test_sampling.py
@@ -87,7 +87,7 @@ def gradient(x):
 
     hmc.run(10)
 
-    assert np.linalg.norm(hmc.x - ref_hmc) < 1.0e-14
+    assert np.allclose(hmc.x,ref_hmc)
 
 @pytest.fixture(params=["flip_parallel", "flip_serial"])
 def flip_type(request):