diff --git a/src/allmydata/frontends/magic_folder.py b/src/allmydata/frontends/magic_folder.py
index 0b3633efb..dda7e46e4 100644
--- a/src/allmydata/frontends/magic_folder.py
+++ b/src/allmydata/frontends/magic_folder.py
@@ -386,11 +386,6 @@ class MagicFolder(service.MultiService):
                                      self.set_public_status, poll_interval=downloader_delay)
         self._public_status = (False, ['Magic folder has not yet started'])
 
-    def enable_debug_log(self, enabled=True):
-        twlog.msg("enable debug log: %s" % enabled)
-        self.uploader.enable_debug_log(enabled)
-        self.downloader.enable_debug_log(enabled)
-
     def get_public_status(self):
         """
         For the web UI, basically.
@@ -606,7 +601,6 @@ class QueueMixin(HookMixin):
         self._db = db
         self._name = name
         self._clock = clock
-        self._debug_log = False
         self._logger = None
         self._hooks = {
             'processed': None,
@@ -627,10 +621,6 @@ class QueueMixin(HookMixin):
         self._process_history = deque(maxlen=20)
         self._in_progress = []
 
-    def enable_debug_log(self, enabled=True):
-        twlog.msg("queue mixin enable debug logging: %s" % enabled)
-        self._debug_log = enabled
-
     def get_status(self):
         """
         Returns an iterable of instances that implement IQueuedItem
@@ -763,8 +753,6 @@ class QueueMixin(HookMixin):
     def _log(self, msg):
         s = "Magic Folder %s %s: %s" % (quote_output(self._client.nickname), self._name, msg)
         self._client.log(s)
-        if self._debug_log:
-            twlog.msg(s)
 
 # this isn't in interfaces.py because it's very specific to QueueMixin
 class IQueuedItem(Interface):
diff --git a/src/allmydata/test/test_magic_folder.py b/src/allmydata/test/test_magic_folder.py
index 800570b51..41414571b 100644
--- a/src/allmydata/test/test_magic_folder.py
+++ b/src/allmydata/test/test_magic_folder.py
@@ -1482,11 +1482,6 @@ class SingleMagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, Reall
 
     def tearDown(self):
         d = super(SingleMagicFolderTestMixin, self).tearDown()
-        def _disable_debugging(res):
-            if self.magicfolder:
-                self.magicfolder.enable_debug_log(False)
-            return res
-        d.addBoth(_disable_debugging)
         d.addCallback(self.cleanup)
         shutil.rmtree(self.basedir, ignore_errors=True)
         return d
@@ -1593,7 +1588,6 @@ class SingleMagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, Reall
         into the magic folder, so we upload the file and record the
         directory. (XXX split to separate test)
         """
-        self.magicfolder.enable_debug_log()
         empty_tree_name = self.unicode_or_fallback(u"empty_tr\u00EAe", u"empty_tree")
         empty_tree_dir = abspath_expanduser_unicode(empty_tree_name, base=self.basedir)
         new_empty_tree_dir = abspath_expanduser_unicode(empty_tree_name, base=self.local_dir)