diff --git a/plone/app/discussion/tests/test_comments_viewlet.py b/plone/app/discussion/tests/test_comments_viewlet.py
index 31e682c..e67881e 100644
--- a/plone/app/discussion/tests/test_comments_viewlet.py
+++ b/plone/app/discussion/tests/test_comments_viewlet.py
@@ -242,8 +242,7 @@ class TestCommentsViewlet(PloneTestCase):
         conversation.addComment(comment)
         conversation.addComment(comment)
         replies = self.viewlet.get_replies()
-        self.assertEquals(sum(1 for w in replies), # pylint: disable-msg=W0612
-                          2) 
+        self.assertEquals(tuple(replies), 2) 
         replies = self.viewlet.get_replies()
         replies.next()
         replies.next()
@@ -255,9 +254,8 @@ class TestCommentsViewlet(PloneTestCase):
         comment.text = 'Comment text'
         conversation = IConversation(self.portal.doc1)
         c1 = conversation.addComment(comment)
-        self.assertEquals(sum(1 for w in # pylint: disable-msg=W0612
-                              self.viewlet.get_replies(workflow_actions=True)), 
-                              1) 
+        self.assertEquals(
+            tuple(self.viewlet.get_replies(workflow_actions=True)), 1) 
         # Enable moderation workflow
         self.portal.portal_workflow.setChainForPortalTypes(
             ('Discussion Item',),
diff --git a/plone/app/discussion/tests/test_conversation.py b/plone/app/discussion/tests/test_conversation.py
index 62642c8..94ecfaf 100644
--- a/plone/app/discussion/tests/test_conversation.py
+++ b/plone/app/discussion/tests/test_conversation.py
@@ -54,7 +54,7 @@ class ConversationTest(PloneTestCase):
                           aq_base(conversation))
         self.assertEquals(new_id, comment.comment_id)
         self.assertEquals(len(list(conversation.getComments())), 1)
-        self.assertEquals(sum(1 for w in conversation.getThreads()), 1)
+        self.assertEquals(tuple(conversation.getThreads()), 1)
         self.assertEquals(conversation.total_comments, 1)
         self.assert_(conversation.last_comment_date - datetime.utcnow() < 
                      timedelta(seconds=1))
@@ -75,7 +75,7 @@ class ConversationTest(PloneTestCase):
 
         # make sure the comment has been added
         self.assertEquals(len(list(conversation.getComments())), 1)
-        self.assertEquals(sum(1 for w in conversation.getThreads()), 1)
+        self.assertEquals(tuple(conversation.getThreads()), 1)
         self.assertEquals(conversation.total_comments, 1)
 
         # delete the comment we just created
@@ -83,7 +83,7 @@ class ConversationTest(PloneTestCase):
 
         # make sure there is no comment left in the conversation
         self.assertEquals(len(list(conversation.getComments())), 0)
-        self.assertEquals(sum(1 for w in conversation.getThreads()), 0)
+        self.assertEquals(tuple(conversation.getThreads()), 0)
         self.assertEquals(conversation.total_comments, 0)
 
     def test_delete_recursive(self):
@@ -165,7 +165,7 @@ class ConversationTest(PloneTestCase):
         
         # Make sure the comment has been deleted as well
         self.assertEquals(len(list(conversation.getComments())), 0)
-        self.assertEquals(sum(1 for w in conversation.getThreads()), 0)
+        self.assertEquals(tuple(conversation.getThreads()), 0)
         self.assertEquals(conversation.total_comments, 0) 
 
     def test_allow_discussion(self):