diff --git a/lib/charms/mongodb/v0/config_server_interface.py b/lib/charms/mongodb/v0/config_server_interface.py
index a0316ce33..e73ee855f 100644
--- a/lib/charms/mongodb/v0/config_server_interface.py
+++ b/lib/charms/mongodb/v0/config_server_interface.py
@@ -162,6 +162,7 @@ def _on_relation_changed(self, event) -> None:
             event.defer()
             return
 
+        # TODO: Follow up PR. Create an "operator" user for this mongos
         # TODO: Follow up PR. Add a user for mongos once it has been started
         self.charm.unit_peer_data["mongos_initialised"] = json.dumps(True)
         self.charm.unit.status = ActiveStatus()