diff --git a/src/plugins/plugin_xep_0277.py b/src/plugins/plugin_xep_0277.py
index fbfde631..8990e09d 100755
--- a/src/plugins/plugin_xep_0277.py
+++ b/src/plugins/plugin_xep_0277.py
@@ -71,6 +71,7 @@ class XEP_0277(object):
     def __init__(self, host):
         log.info(_(u"Microblogging plugin initialization"))
         self.host = host
+        host.registerNamespace('microblog', NS_MICROBLOG)
         self._p = self.host.plugins["XEP-0060"] # this facilitate the access to pubsub plugin
         self.rt_sessions = sat_defer.RTDeferredSessions()
         self.host.plugins["XEP-0060"].addManagedNode(NS_MICROBLOG, items_cb=self._itemsReceived)