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-rw-r--r--slixmpp/roster/single.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/slixmpp/roster/single.py b/slixmpp/roster/single.py
index a37e3eb7..62fbca41 100644
--- a/slixmpp/roster/single.py
+++ b/slixmpp/roster/single.py
@@ -254,6 +254,9 @@ class RosterNode(object):
callback -- Optional reference to a stream handler function.
Will be executed when the roster is received.
"""
+ if not groups:
+ groups = []
+
self[jid]['name'] = name
self[jid]['groups'] = groups
self[jid].save()