2 files changed, 3 insertions, 3 deletions
diff --git a/slixmpp/plugins/xep_0047/ibb.py b/slixmpp/plugins/xep_0047/ibb.py
index 52d7fbe5..bd96eca2 100644
--- a/slixmpp/plugins/xep_0047/ibb.py
+++ b/slixmpp/plugins/xep_0047/ibb.py
@@ -18,7 +18,7 @@ class XEP_0047(BasePlugin):
 
     name = 'xep_0047'
     description = 'XEP-0047: In-band Bytestreams'
-    dependencies = set(['xep_0030'])
+    dependencies = {'xep_0030'}
     stanza = stanza
     default_config = {
         'block_size': 4096,
diff --git a/slixmpp/plugins/xep_0047/stanza.py b/slixmpp/plugins/xep_0047/stanza.py
index 91f17c1c..5c47508a 100644
--- a/slixmpp/plugins/xep_0047/stanza.py
+++ b/slixmpp/plugins/xep_0047/stanza.py
@@ -38,7 +38,7 @@ class Data(ElementBase):
     namespace = 'http://jabber.org/protocol/ibb'
     plugin_attrib = 'ibb_data'
     interfaces = {'seq', 'sid', 'data'}
-    sub_interfaces = set(['data'])
+    sub_interfaces = {'data'}
 
     def get_seq(self):
         return int(self._get_attr('seq', '0'))
@@ -67,4 +67,4 @@ class Close(ElementBase):
     name = 'close'
     namespace = 'http://jabber.org/protocol/ibb'
     plugin_attrib = 'ibb_close'
-    interfaces = set(['sid'])
+    interfaces = {'sid'}