diff --git a/src/plugins/plugin_xep_0096.py b/src/plugins/plugin_xep_0096.py
index 054256df..d51a657b 100755
--- a/src/plugins/plugin_xep_0096.py
+++ b/src/plugins/plugin_xep_0096.py
@@ -33,8 +33,6 @@ from zope.interface import implements
 from wokkel import disco, iwokkel, data_form
 
 IQ_SET = '/iq[@type="set"]'
-NS_SI = 'http://jabber.org/protocol/si'
-SI_REQUEST = IQ_SET + '/si[@xmlns="' + NS_SI + '"]'
 PROFILE_NAME = "file-transfer"
 PROFILE = "http://jabber.org/protocol/si/profile/" + PROFILE_NAME