1 files changed, 8 insertions, 7 deletions
diff --git a/synapse/handlers/appservice.py b/synapse/handlers/appservice.py
index d9f35a5dba..ec9fe01a5a 100644
--- a/synapse/handlers/appservice.py
+++ b/synapse/handlers/appservice.py
@@ -13,17 +13,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import logging
+
+from six import itervalues
+
+from prometheus_client import Counter
+
 from twisted.internet import defer
 
 import synapse
 from synapse.api.constants import EventTypes
+from synapse.util.logcontext import make_deferred_yieldable, run_in_background
 from synapse.util.metrics import Measure
-from synapse.util.logcontext import (
-    make_deferred_yieldable, run_in_background,
-)
-from prometheus_client import Counter
-
-import logging
 
 logger = logging.getLogger(__name__)
 
@@ -119,7 +120,7 @@ class ApplicationServicesHandler(object):
 
                     yield make_deferred_yieldable(defer.gatherResults([
                         run_in_background(handle_room_events, evs)
-                        for evs in events_by_room.itervalues()
+                        for evs in itervalues(events_by_room)
                     ], consumeErrors=True))
 
                     yield self.store.set_appservice_last_pos(upper_bound)