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-rw-r--r--synapse/handlers/pagination.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/handlers/pagination.py b/synapse/handlers/pagination.py
index 4f42438053..cd64142735 100644
--- a/synapse/handlers/pagination.py
+++ b/synapse/handlers/pagination.py
@@ -406,6 +406,9 @@ class PaginationHandler:
             force: set true to skip checking for joined users.
         """
         with await self.pagination_lock.write(room_id):
+            # check we know about the room
+            await self.store.get_room_version_id(room_id)
+
             # first check that we have no users in this room
             if not force:
                 joined = await self.store.is_host_joined(room_id, self._server_name)