diff --git a/testsuite/MDAnalysisTests/topology/test_mmtf.py b/testsuite/MDAnalysisTests/topology/test_mmtf.py
index 1389e567745..0c4bfd66051 100644
--- a/testsuite/MDAnalysisTests/topology/test_mmtf.py
+++ b/testsuite/MDAnalysisTests/topology/test_mmtf.py
@@ -108,11 +108,12 @@ def u(self):
 
 class TestMMTFFetch(TestMMTFUniverse):
     @pytest.fixture()
-    @mock.patch('mmtf.fetch')
-    def u(self, mock_fetch):
+    def u(self):
         top = mmtf.parse(MMTF)
-        mock_fetch.return_value = top
-        return mda.fetch_mmtf('173D')  # string is irrelevant
+        with mock.patch('mmtf.fetch') as mock_fetch:
+            mock_fetch.return_value = top
+
+            return mda.fetch_mmtf('173D')  # string is irrelevant
 
 
 class TestSelectModels(object):
diff --git a/testsuite/MDAnalysisTests/topology/test_pqr.py b/testsuite/MDAnalysisTests/topology/test_pqr.py
index 216a7a71c2d..c6c89ab5d2b 100644
--- a/testsuite/MDAnalysisTests/topology/test_pqr.py
+++ b/testsuite/MDAnalysisTests/topology/test_pqr.py
@@ -90,7 +90,7 @@ def test_gromacs_flavour():
     assert u.atoms[0].type == 'O'
     assert u.atoms[0].segid == 'SYSTEM'
     assert not u._topology.types.is_guessed
-    assert u.atoms[0].radius == pytest.approx(1.48)
-    assert u.atoms[0].charge == pytest.approx(-0.67)
+    assert_almost_equal(u.atoms[0].radius, 1.48, decimal=5)
+    assert_almost_equal(u.atoms[0].charge, -0.67, decimal=5)
     # coordinatey things
     assert_almost_equal(u.atoms[0].position, [15.710, 17.670, 23.340], decimal=4)