diff --git a/jupyter_server_documents/rooms/yroom.py b/jupyter_server_documents/rooms/yroom.py
index 90271ef..7c99ec7 100644
--- a/jupyter_server_documents/rooms/yroom.py
+++ b/jupyter_server_documents/rooms/yroom.py
@@ -866,6 +866,9 @@ def stop(self, close_code: int = 1001, immediately: bool = False) -> None:
         IMPORTANT: If the server is shutting down, the YRoomManager should call
         `await room.until_saved`. See `until_saved` documentation for more info.
         """
+        if self._stopped:
+            return
+
         self.log.info(f"Stopping YRoom '{self.room_id}'.")
 
         # Disconnect all clients with the given close code