diff --git a/mapper/src/App.js b/mapper/src/App.js
index 43704e5..b41177c 100644
--- a/mapper/src/App.js
+++ b/mapper/src/App.js
@@ -16,7 +16,7 @@ import 'react-range-slider-input/dist/style.css';
 const durations = [
 	{id: 0, len: 'Day', win: '1m', full: '1 min', delta: [1, 'days'], format: 'HH', num: 1440, secs: 60},
 	{id: 1, len: 'Week', win: '3m', full: '3 min', delta: [7, 'days'], format: 'HH', num: 3360, secs: 180},
-	{id: 2, len: 'Month', win: '10m', full: '10 min', delta: [1, 'months'], format: 'D', num: 4380, secs: 600},
+	{id: 2, len: 'Month', shortLen: 'Mon', win: '10m', full: '10 min', delta: [1, 'months'], format: 'D', num: 4380, secs: 600},
 	{id: 3, len: 'Year', win: '2h', full: '2 hour', delta: [1, 'years'], format: 'M/D', num: 4380, secs: 7200},
 ];
 
@@ -396,7 +396,7 @@ function Menu({duration, setDuration, end, setEnd, slider, setSlider, submenu, s
 					onClick={() => setSubmenu('duration')}
 					className={submenu === 'duration' ? 'active' : ''}
 				>
-					{duration.len} / {duration.win}
+					{(duration.shortLen || duration.len)} / {duration.win}
 				</button>
 
 				<button onClick={() => next()}>&gt;</button>