diff --git a/tmux/one_drone/config/simulator.yaml b/tmux/one_drone/config/simulator.yaml
index 0fffa85..2a3f31a 100644
--- a/tmux/one_drone/config/simulator.yaml
+++ b/tmux/one_drone/config/simulator.yaml
@@ -5,7 +5,7 @@ uav_names: [
 
 graphics_settings: "low"
 
-world_name: "VALLEY"
+world_name: "valley"
 
 weather_type: "sunny"