diff --git a/tests/test_createiso_phase.py b/tests/test_createiso_phase.py
index 937f2137..02ccd8be 100644
--- a/tests/test_createiso_phase.py
+++ b/tests/test_createiso_phase.py
@@ -1329,7 +1329,7 @@ class CreateisoTryReusePhaseTest(helpers.PungiTestCase):
         super(CreateisoTryReusePhaseTest, self).setUp()
         self.logger = logging.getLogger()
         self.logger.setLevel(logging.DEBUG)
-        self.logger.addHandler(logging.NullHandler())
+        self.logger.addHandler(logging.StreamHandler(os.devnull))
 
     def test_disabled(self):
         compose = helpers.DummyCompose(self.topdir, {"createiso_allow_reuse": False})
diff --git a/tests/test_extra_isos_phase.py b/tests/test_extra_isos_phase.py
index 3e51c266..fab8aee6 100644
--- a/tests/test_extra_isos_phase.py
+++ b/tests/test_extra_isos_phase.py
@@ -1064,7 +1064,7 @@ class ExtraisoTryReusePhaseTest(helpers.PungiTestCase):
         super(ExtraisoTryReusePhaseTest, self).setUp()
         self.logger = logging.getLogger()
         self.logger.setLevel(logging.DEBUG)
-        self.logger.addHandler(logging.NullHandler())
+        self.logger.addHandler(logging.StreamHandler(os.devnull))
 
     def test_disabled(self):
         compose = helpers.DummyCompose(self.topdir, {"extraiso_allow_reuse": False})