diff --git a/searx/engines/demo_online.py b/searx/engines/demo_online.py
index d2af8be0b..3a5b6d817 100644
--- a/searx/engines/demo_online.py
+++ b/searx/engines/demo_online.py
@@ -57,7 +57,7 @@ about = {
 _my_online_engine = None
 
 
-def setup(engine_settings: dict[str, t.Any]) -> bool:
+def setup(engine_settings: "OnlineParams") -> bool:
     """Dynamic setup of the engine settings.
 
     For more details see :py:obj:`searx.enginelib.Engine.setup`."""