diff --git a/tests/test_synthetic_volume.py b/tests/test_synthetic_volume.py
index 8860b3532d..ddcdcbcab5 100644
--- a/tests/test_synthetic_volume.py
+++ b/tests/test_synthetic_volume.py
@@ -136,4 +136,4 @@ def test_volume_symmetry(vol_fixture):
         corr = np.dot(rot_vol[0].flatten(), vol[0].flatten()) / np.dot(
             vol[0].flatten(), vol[0].flatten()
         )
-        assert abs(corr - 1) < 1e-5
+        assert abs(corr - 1) < 1.1e-5