diff --git a/src/allmydata/scripts/tahoe_backup.py b/src/allmydata/scripts/tahoe_backup.py
index 26279e0c4..ef3da34b4 100644
--- a/src/allmydata/scripts/tahoe_backup.py
+++ b/src/allmydata/scripts/tahoe_backup.py
@@ -9,7 +9,8 @@ from allmydata.scripts.common import get_alias, escape_path, DEFAULT_ALIAS, \
 from allmydata.scripts.common_http import do_http, HTTPError, format_http_error
 from allmydata.util import time_format
 from allmydata.scripts import backupdb
-from allmydata.util.encodingutil import listdir_unicode, quote_output, to_str, FilenameEncodingError
+from allmydata.util.encodingutil import listdir_unicode, quote_output, \
+     to_str, FilenameEncodingError, unicode_to_url
 from allmydata.util.assertutil import precondition
 from allmydata.util.fileutil import abspath_expanduser_unicode
 
diff --git a/src/allmydata/test/test_cli.py b/src/allmydata/test/test_cli.py
index d9e34c2a9..b3d899164 100644
--- a/src/allmydata/test/test_cli.py
+++ b/src/allmydata/test/test_cli.py
@@ -1493,6 +1493,7 @@ class Cp(GridTestMixin, CLITestMixin, unittest.TestCase):
         fn1 = os.path.join(unicode(self.basedir), u"\u00C4rtonwall")
         try:
             fn1_arg = fn1.encode(get_argv_encoding())
+            del fn1_arg # hush pyflakes
             artonwall_arg = u"\u00C4rtonwall".encode(get_argv_encoding())
         except UnicodeEncodeError:
             raise unittest.SkipTest("A non-ASCII command argument could not be encoded on this platform.")