diff --git a/mapper/src/App.js b/mapper/src/App.js
index 29ad177..6ae53e5 100644
--- a/mapper/src/App.js
+++ b/mapper/src/App.js
@@ -167,6 +167,9 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider}) {
 		}
 	};
 
+	const rangeDelta = (x) => {
+	};
+
 	return (
 		<div className='menu'>
 			{(showRange || !!submenu) && <div className='range'>