diff --git a/plone/app/discussion/browser/comments.py b/plone/app/discussion/browser/comments.py
index 3ece16a..8759dfa 100644
--- a/plone/app/discussion/browser/comments.py
+++ b/plone/app/discussion/browser/comments.py
@@ -201,8 +201,6 @@ class CommentForm(extensible.ExtensibleForm, form.Form):
 
 class ViewletFormWrapper(ViewletBase, layout.FormWrapper):
 
-    implements(IViewlet)
-
     form = CommentForm
 
     def index(self):