diff --git a/plone/app/discussion/interfaces.py b/plone/app/discussion/interfaces.py
index 3f29b28..e309b59 100644
--- a/plone/app/discussion/interfaces.py
+++ b/plone/app/discussion/interfaces.py
@@ -29,9 +29,7 @@ class IDiscussionSettings(Interface):
                          "specific content types, folders or content objects "
                          "before users will be able to post comments."),
         required=False,
-        default=False,
-        # XXX: pad is disabled by default if shipped with Plone. If shipped as
-        # add-on product, commenting should be enabled by default.
+        default=True,
         )
 
     anonymous_comments = schema.Bool(