diff --git a/plone/app/discussion/tool.py b/plone/app/discussion/tool.py
index 902e6a6..a10ae3c 100644
--- a/plone/app/discussion/tool.py
+++ b/plone/app/discussion/tool.py
@@ -5,8 +5,8 @@ standard portal_catalog for indexing comments.
 
 BBB support for the old portal_discussion is provided in the bbb package.
 """
-from interfaces import IComment
-from interfaces import ICommentingTool
+from .interfaces import IComment
+from .interfaces import ICommentingTool
 from OFS.SimpleItem import SimpleItem
 from Products.CMFCore.utils import getToolByName
 from Products.CMFCore.utils import UniqueObject