diff --git a/psutil/tests/test_linux.py b/psutil/tests/test_linux.py
index 55839a1ba..58de4a1cb 100755
--- a/psutil/tests/test_linux.py
+++ b/psutil/tests/test_linux.py
@@ -1513,25 +1513,27 @@ def test_boot_time_mocked(self):
                 psutil._pslinux.boot_time)
             assert m.called
 
-    def test_users_mocked(self):
+    def test_users_utmp_mocked(self):
         # Make sure ':0' and ':0.0' (returned by C ext) are converted
         # to 'localhost'.
-        with mock.patch('psutil._pslinux.cext.users',
-                        return_value=[('giampaolo', 'pts/2', ':0',
-                                       1436573184.0, True, 2)]) as m:
-            self.assertEqual(psutil.users()[0].host, 'localhost')
-            assert m.called
-        with mock.patch('psutil._pslinux.cext.users',
-                        return_value=[('giampaolo', 'pts/2', ':0.0',
-                                       1436573184.0, True, 2)]) as m:
-            self.assertEqual(psutil.users()[0].host, 'localhost')
-            assert m.called
-        # ...otherwise it should be returned as-is
-        with mock.patch('psutil._pslinux.cext.users',
-                        return_value=[('giampaolo', 'pts/2', 'foo',
-                                       1436573184.0, True, 2)]) as m:
-            self.assertEqual(psutil.users()[0].host, 'foo')
-            assert m.called
+        with mock.patch('psutil._pslinux.cext.users_systemd',
+                        return_value=None):
+            with mock.patch('psutil._pslinux.cext.users_utmp',
+                            return_value=[('giampaolo', 'pts/2', ':0',
+                                           1436573184.0, True, 2)]) as m:
+                self.assertEqual(psutil.users()[0].host, 'localhost')
+                assert m.called
+            with mock.patch('psutil._pslinux.cext.users_utmp',
+                            return_value=[('giampaolo', 'pts/2', ':0.0',
+                                           1436573184.0, True, 2)]) as m:
+                self.assertEqual(psutil.users()[0].host, 'localhost')
+                assert m.called
+            # ...otherwise it should be returned as-is
+            with mock.patch('psutil._pslinux.cext.users_utmp',
+                            return_value=[('giampaolo', 'pts/2', 'foo',
+                                           1436573184.0, True, 2)]) as m:
+                self.assertEqual(psutil.users()[0].host, 'foo')
+                assert m.called
 
     def test_procfs_path(self):
         tdir = self.get_testfn()
diff --git a/psutil/tests/test_memleaks.py b/psutil/tests/test_memleaks.py
index cd1b3f290..ec0866158 100755
--- a/psutil/tests/test_memleaks.py
+++ b/psutil/tests/test_memleaks.py
@@ -485,6 +485,14 @@ def test_win_service_get_description(self):
             name = next(psutil.win_service_iter()).name()
             self.execute(lambda: cext.winservice_query_descr(name))
 
+    if LINUX:
+
+        def test_users_systemd(self):
+            self.execute(cext.users_systemd)
+
+        def test_users_utmp(self):
+            self.execute(cext.users_utmp)
+
 
 if __name__ == '__main__':
     from psutil.tests.runner import run_from_name