1 files changed, 5 insertions, 2 deletions
diff --git a/synapse/groups/groups_server.py b/synapse/groups/groups_server.py
index 2d95b04e0c..633c865ed8 100644
--- a/synapse/groups/groups_server.py
+++ b/synapse/groups/groups_server.py
@@ -16,9 +16,12 @@
 
 import logging
 
+from six import string_types
+
+from twisted.internet import defer
+
 from synapse.api.errors import SynapseError
 from synapse.types import GroupID, RoomID, UserID, get_domain_from_id
-from twisted.internet import defer
 
 logger = logging.getLogger(__name__)
 
@@ -431,7 +434,7 @@ class GroupsServerHandler(object):
                         "long_description"):
             if keyname in content:
                 value = content[keyname]
-                if not isinstance(value, basestring):
+                if not isinstance(value, string_types):
                     raise SynapseError(400, "%r value is not a string" % (keyname,))
                 profile[keyname] = value