diff --git a/plone/app/discussion/configure.zcml b/plone/app/discussion/configure.zcml
index 780cc95..f66a27a 100644
--- a/plone/app/discussion/configure.zcml
+++ b/plone/app/discussion/configure.zcml
@@ -1,6 +1,7 @@
 <configure
     xmlns="http://namespaces.zope.org/zope"
     xmlns:genericsetup="http://namespaces.zope.org/genericsetup"
+    xmlns:i18n="http://namespaces.zope.org/i18n"
     xmlns:monkey="http://namespaces.plone.org/monkey"
     i18n_domain="plone.app.discussion">