diff --git a/tests/importer_test.py b/tests/importer_test.py
index 882db78f..1a654a2d 100644
--- a/tests/importer_test.py
+++ b/tests/importer_test.py
@@ -15,13 +15,6 @@ import mitogen.utils
 import testlib
 
 
-import logging
-logging.basicConfig(level=logging.DEBUG)
-mitogen.core._v = True
-mitogen.core._vv = True
-mitogen.core.IOLOG.setLevel(logging.DEBUG)
-
-
 class ImporterMixin(testlib.RouterMixin):
     modname = None
 
diff --git a/tests/testlib.py b/tests/testlib.py
index a43c8b1d..fd41298b 100644
--- a/tests/testlib.py
+++ b/tests/testlib.py
@@ -10,6 +10,8 @@ import urlparse
 import unittest2
 
 import mitogen.master
+import mitogen.utils
+
 if mitogen.is_master:  # TODO: shouldn't be necessary.
     import docker
 
@@ -17,10 +19,7 @@ if mitogen.is_master:  # TODO: shouldn't be necessary.
 DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
 sys.path.append(DATA_DIR)
 
-
-def set_debug():
-    import logging
-    logging.getLogger('mitogen').setLevel(logging.DEBUG)
+mitogen.utils.log_to_file()
 
 
 def data_path(suffix):
diff --git a/tests/tty_create_child_test.py b/tests/tty_create_child_test.py
index dca1d375..879373ca 100644
--- a/tests/tty_create_child_test.py
+++ b/tests/tty_create_child_test.py
@@ -4,6 +4,7 @@ import tempfile
 import time
 import unittest2
 
+import testlib
 import mitogen.parent
 
 
@@ -11,8 +12,6 @@ class TtyCreateChildTest(unittest2.TestCase):
     func = staticmethod(mitogen.parent.tty_create_child)
 
     def test_dev_tty_open_succeeds(self):
-        import logging
-        logging.basicConfig(level=logging.DEBUG)
         tf = tempfile.NamedTemporaryFile()
         try:
             pid, fd = self.func(