diff --git a/testing/mozbase/mozfile/mozfile/mozfile.py b/testing/mozbase/mozfile/mozfile/mozfile.py
index 4313521b8f42..987f83a799fd 100644
--- a/testing/mozbase/mozfile/mozfile/mozfile.py
+++ b/testing/mozbase/mozfile/mozfile/mozfile.py
@@ -252,29 +252,11 @@ def depth(directory):
     return level
 
 
-# ASCII delimeters
-ascii_delimeters = {
-    'vertical_line': '|',
-    'item_marker': '+',
-    'last_child': '\\'
-}
-
-# unicode delimiters
-unicode_delimeters = {
-    'vertical_line': u'│',
-    'item_marker': u'├',
-    'last_child': u'└'
-}
-
-
-def tree(directory,
-         item_marker=unicode_delimeters['item_marker'],
-         vertical_line=unicode_delimeters['vertical_line'],
-         last_child=unicode_delimeters['last_child'],
-         sort_key=lambda x: x.lower()):
-    """
-    display tree directory structure for `directory`
-    """
+def tree(directory, sort_key=lambda x: x.lower()):
+    """Display tree directory structure for `directory`."""
+    vertical_line = u'│'
+    item_marker = u'├'
+    last_child = u'└'
 
     retval = []
     indent = []
diff --git a/testing/mozbase/mozprofile/tests/test_profile_view.py b/testing/mozbase/mozprofile/tests/test_profile_view.py
index cbb429f468d5..1db009ec657b 100644
--- a/testing/mozbase/mozprofile/tests/test_profile_view.py
+++ b/testing/mozbase/mozprofile/tests/test_profile_view.py
@@ -47,7 +47,7 @@ class TestProfilePrint(unittest.TestCase):
     def test_str_cast(self):
         """Test casting to a string."""
         profile = mozprofile.Profile()
-        self.assertEqual(str(profile), profile.summary().encode("UTF-8"))
+        self.assertEqual(str(profile), profile.summary().encode("utf-8"))
 
     def test_unicode_cast(self):
         """Test casting to a unicode string."""