diff --git a/crates/border-wars/src/ui/game_ui.rs b/crates/border-wars/src/ui/game_ui.rs
index 5bf0c89..35fd1ca 100644
--- a/crates/border-wars/src/ui/game_ui.rs
+++ b/crates/border-wars/src/ui/game_ui.rs
@@ -4,6 +4,7 @@ use bevy::prelude::*;
 
 use crate::CurrentScene;
 
+/// The plugin that sets up the UI for the game.
 pub struct GameUiPlugin;
 
 impl Plugin for GameUiPlugin {