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-rw-r--r--synapse/handlers/room_list.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/synapse/handlers/room_list.py b/synapse/handlers/room_list.py
index bb40075387..ae5db4d2c5 100644
--- a/synapse/handlers/room_list.py
+++ b/synapse/handlers/room_list.py
@@ -186,6 +186,11 @@ class RoomListHandler(BaseHandler):
         logger.info("After sorting and filtering, %i rooms remain",
                     len(rooms_to_scan))
 
+        #bail if no rooms to work on
+        if len(rooms_to_scan) == 0:
+            defer.returnValue([])
+
+
         # _append_room_entry_to_chunk will append to chunk but will stop if
         # len(chunk) > limit
         #