diff --git a/modules/io/tests/test_io_mmcif.py b/modules/io/tests/test_io_mmcif.py
index 1fc49ae6d9abab045684918531f767bb89e495f5..bc8a35aa2bc45f9a1a5ac9bb334bcbb28db32ec4 100644
--- a/modules/io/tests/test_io_mmcif.py
+++ b/modules/io/tests/test_io_mmcif.py
@@ -171,7 +171,7 @@ class TestMMCifInfo(unittest.TestCase):
                                      seqres=True,
                                      info=True)
     pdb_ent, t = info.GetBioUnits()[0].PDBize(ent, transformation=True)
-    self.assertAlmostEquals(pdb_ent.GetCenterOfAtoms()[0], -915.759, 3)
+    self.assertAlmostEquals(pdb_ent.GetCenterOfAtoms()[0], -915.759, 2)
     self.assertAlmostEquals(pdb_ent.GetCenterOfAtoms()[1], -952.345, 2)
     self.assertAlmostEquals(pdb_ent.GetCenterOfAtoms()[2], 3221.75, 2)
     self.assertEquals(geom.Equal(t,