diff --git a/plone/app/discussion/catalog.py b/plone/app/discussion/catalog.py
index 9f69ae0..8651255 100644
--- a/plone/app/discussion/catalog.py
+++ b/plone/app/discussion/catalog.py
@@ -12,17 +12,15 @@ from Products.CMFCore.interfaces import IContentish
 
 from Products.ZCatalog.interfaces import IZCatalog
 
-from plone.indexer import indexer
-
 from plone.app.discussion.interfaces import IConversation, IComment
 
+from plone.indexer import indexer
+from plone.indexer.interfaces import IIndexer
 
 MAX_DESCRIPTION=25
 
 # Conversation Indexers
 
-from plone.indexer.interfaces import IIndexer
-
 @indexer(IContentish, IZCatalog)
 def total_comments(object):
     conversation = IConversation(object)
@@ -89,3 +87,17 @@ def modified(object):
                     object.modification_date.hour,
                     object.modification_date.minute,
                     object.modification_date.second)
+
+# Override the conversation indexers for comments
+
+@indexer(IComment)
+def comments_total_comments(object):
+    return None
+
+@indexer(IComment)
+def comments_last_comment_date(object):
+    return None
+
+@indexer(IComment)
+def comments_commentators(object):
+    return None
diff --git a/plone/app/discussion/configure.zcml b/plone/app/discussion/configure.zcml
index 16bfea8..4c5e1d0 100644
--- a/plone/app/discussion/configure.zcml
+++ b/plone/app/discussion/configure.zcml
@@ -85,5 +85,8 @@
     <adapter name="effective" factory=".catalog.effective" />
     <adapter name="created" factory=".catalog.created" />
     <adapter name="modified" factory=".catalog.modified" />
+    <adapter name="total_comments" factory=".catalog.comments_total_comments" />
+    <adapter name="last_comment_date" factory=".catalog.comments_last_comment_date" />
+    <adapter name="commentators" factory=".catalog.comments_commentators" />
 
 </configure>
diff --git a/plone/app/discussion/tests/test_catalog.py b/plone/app/discussion/tests/test_catalog.py
index aa0ff71..fb4ccc0 100644
--- a/plone/app/discussion/tests/test_catalog.py
+++ b/plone/app/discussion/tests/test_catalog.py
@@ -64,6 +64,7 @@ class ConversationCatalogTest(PloneTestCase):
                      path = {'query' : '/'.join(self.portal.doc1.getPhysicalPath()) },
                      portal_type = "Document"
                      )
+        self.brains = brains
         self.conversation = conversation
         self.conversation_brain = brains[0]
         self.comment1 = comment1
@@ -171,6 +172,16 @@ class ConversationCatalogTest(PloneTestCase):
         conversation_brain = brains[0]
         self.assertEquals(conversation_brain.commentators, ())
 
+    def test_conversation_indexes_not_in_comments(self):
+        brains = self.catalog.searchResults(
+                     path = {'query' : '/'.join(self.portal.doc1.getPhysicalPath()) },
+                     portal_type = "Discussion Item"
+                     )
+        comment1_brain = brains[0]
+        self.assertEquals(comment1_brain.commentators, None)
+        self.assertEquals(comment1_brain.last_comment_date, None)
+        self.assertEquals(comment1_brain.total_comments, None)
+
 class CommentCatalogTest(PloneTestCase):
 
     layer = DiscussionLayer