diff --git a/src/sugar/activity/activity.py b/src/sugar/activity/activity.py
index c91a023c..0e2ecc53 100644
--- a/src/sugar/activity/activity.py
+++ b/src/sugar/activity/activity.py
@@ -52,7 +52,6 @@ import logging
 import os
 import time
 from hashlib import sha1
-import traceback
 import gconf
 
 import gtk
diff --git a/src/sugar/util.py b/src/sugar/util.py
index 7b331411..b947c0a3 100644
--- a/src/sugar/util.py
+++ b/src/sugar/util.py
@@ -201,7 +201,7 @@ class LRU:
         return iter(self.d)
 
     def itervalues(self):
-        for i, j in self.iteritems():
+        for i_, j in self.iteritems():
             yield j
 
     def keys(self):