diff --git a/sleekxmpp/plugins/xep_0004.py b/sleekxmpp/plugins/xep_0004.py
index ec85925..24ffa97 100644
--- a/sleekxmpp/plugins/xep_0004.py
+++ b/sleekxmpp/plugins/xep_0004.py
@@ -31,7 +31,7 @@ class xep_0004(base.base_plugin):
 		self.xmpp.add_handler("<message><x xmlns='jabber:x:data' /></message>", self.handler_message_xform)
 	
 	def post_init(self):
-		self.xmpp['xep_0030'].add_feature('jabber:x:data')
+		self.xmpp.plugin['xep_0030'].add_feature('jabber:x:data')
 	
 	def handler_message_xform(self, xml):
 		object = self.handle_form(xml)
diff --git a/sleekxmpp/plugins/xep_0009.py b/sleekxmpp/plugins/xep_0009.py
index e0da829..403f94b 100644
--- a/sleekxmpp/plugins/xep_0009.py
+++ b/sleekxmpp/plugins/xep_0009.py
@@ -185,8 +185,8 @@ class xep_0009(base.base_plugin):
 		self.activeCalls = []
 
 	def post_init(self):
-		self.xmpp['xep_0030'].add_feature('jabber:iq:rpc')
-		self.xmpp['xep_0030'].add_identity('automatition','rpc')
+		self.xmpp.plugin['xep_0030'].add_feature('jabber:iq:rpc')
+		self.xmpp.plugin['xep_0030'].add_identity('automatition','rpc')
 
 	def register_call(self, method, name=None):
 		#@returns an string that can be used in acl commands.
diff --git a/sleekxmpp/plugins/xep_0092.py b/sleekxmpp/plugins/xep_0092.py
index 3d02638..ca0d7e1 100644
--- a/sleekxmpp/plugins/xep_0092.py
+++ b/sleekxmpp/plugins/xep_0092.py
@@ -33,7 +33,7 @@ class xep_0092(base.base_plugin):
 		self.xmpp.add_handler("<iq type='get' xmlns='%s'><query xmlns='jabber:iq:version' /></iq>" % self.xmpp.default_ns, self.report_version)
 	
 	def post_init(self):
-		self.xmpp['xep_0030'].add_feature('jabber:iq:version')
+		self.xmpp.plugin['xep_0030'].add_feature('jabber:iq:version')
 	
 	def report_version(self, xml):
 		iq = self.xmpp.makeIqResult(xml.get('id', 'unknown'))
diff --git a/sleekxmpp/plugins/xep_0199.py b/sleekxmpp/plugins/xep_0199.py
index 989e645..9b10b92 100644
--- a/sleekxmpp/plugins/xep_0199.py
+++ b/sleekxmpp/plugins/xep_0199.py
@@ -35,7 +35,7 @@ class xep_0199(base.base_plugin):
 			#self.xmpp.add_event_handler('session_start', self.handler_pingserver, threaded=True)
 	
 	def post_init(self):
-		self.xmpp['xep_0030'].add_feature('http://www.xmpp.org/extensions/xep-0199.html#ns')
+		self.xmpp.plugin['xep_0030'].add_feature('http://www.xmpp.org/extensions/xep-0199.html#ns')
 	
 	def handler_pingserver(self, xml):
 		if not self.running: