diff --git a/sleekxmpp/xmlstream/stanzabase.py b/sleekxmpp/xmlstream/stanzabase.py
index 77244fb..d4c1118 100644
--- a/sleekxmpp/xmlstream/stanzabase.py
+++ b/sleekxmpp/xmlstream/stanzabase.py
@@ -77,6 +77,7 @@ class ElementBase(object):
 		out += [x for x in self.plugins]
 		if self.iterables:
 			out.append('substanzas')
+		return tuple(out)
 	
 	def find(self, item):
 		return self.iterables.find(item)
diff --git a/tests/pubsub_stanzas.py b/tests/pubsub_stanzas.py
index 2fd6df4..d768a3d 100644
--- a/tests/pubsub_stanzas.py
+++ b/tests/pubsub_stanzas.py
@@ -16,6 +16,9 @@ def testAffiliations():
 	values = iq2.getValues()
 	print(values)
 	iq3.setValues(values)
+	print("-"*8)
+	print(iq3.keys())
+
 	print(iq3)
 	print(str(iq) == str(iq2) == str(iq3))