diff --git a/Lib/distutils/tests/test_config.py b/Lib/distutils/tests/test_config.py
index a18f453..7737538 100644
--- a/Lib/distutils/tests/test_config.py
+++ b/Lib/distutils/tests/test_config.py
@@ -47,7 +47,9 @@
 """
 
 
-class PyPIRCCommandTestCase(support.TempdirManager, unittest.TestCase):
+class PyPIRCCommandTestCase(support.TempdirManager,
+                            support.LoggingSilencer,
+                            unittest.TestCase):
 
     def setUp(self):
         """Patches the environment."""
diff --git a/Lib/distutils/tests/test_sdist.py b/Lib/distutils/tests/test_sdist.py
index 15a8c80..8af080f 100644
--- a/Lib/distutils/tests/test_sdist.py
+++ b/Lib/distutils/tests/test_sdist.py
@@ -34,7 +34,7 @@
 somecode%(sep)sdoc.txt
 """
 
-class sdistTestCase(support.LoggingSilencer, PyPIRCCommandTestCase):
+class sdistTestCase(PyPIRCCommandTestCase):
 
     def setUp(self):
         # PyPIRCCommandTestCase creates a temp dir already