diff --git a/client/src/other/utils.ts b/client/src/other/utils.ts
index 21fb2360..74866674 100644
--- a/client/src/other/utils.ts
+++ b/client/src/other/utils.ts
@@ -104,6 +104,14 @@ export function reciprocalHeading(heading: number): number {
     return heading > 180? heading - 180: heading + 180;
 }
 
+/**
+ * Prepend numbers to the start of a string
+ *
+ * @param num <number> subject number
+ * @param places <number> places to pad
+ * @param decimal <boolean> whether this is a decimal number or not
+ * 
+ * */
 export const zeroAppend = function (num: number, places: number, decimal: boolean = false) {
     var string = decimal? num.toFixed(2): String(num);
     while (string.length < places) {
diff --git a/client/src/unit/unit.ts b/client/src/unit/unit.ts
index b4a92c63..6166ce41 100644
--- a/client/src/unit/unit.ts
+++ b/client/src/unit/unit.ts
@@ -1,6 +1,6 @@
 import { Marker, LatLng, Polyline, Icon, DivIcon, CircleMarker, Map, Point } from 'leaflet';
 import { getApp } from '..';
-import { enumToCoalition, enumToEmissioNCountermeasure, enumToROE, enumToReactionToThreat, enumToState, getUnitDatabaseByCategory, mToFt, msToKnots, rad2deg, bearing, deg2rad, ftToM, getGroundElevation, coalitionToEnum, nmToFt, nmToM } from '../other/utils';
+import { enumToCoalition, enumToEmissioNCountermeasure, enumToROE, enumToReactionToThreat, enumToState, getUnitDatabaseByCategory, mToFt, msToKnots, rad2deg, bearing, deg2rad, ftToM, getGroundElevation, coalitionToEnum, nmToFt, nmToM, zeroAppend } from '../other/utils';
 import { CustomMarker } from '../map/markers/custommarker';
 import { SVGInjector } from '@tanem/svg-injector';
 import { UnitDatabase } from './databases/unitdatabase';
@@ -1184,7 +1184,7 @@ export abstract class Unit extends CustomMarker {
 
                 /* Set altitude and speed */
                 if (element.querySelector(".unit-altitude"))
-                    (<HTMLElement>element.querySelector(".unit-altitude")).innerText = "FL" + String(Math.floor(mToFt(this.#position.alt as number) / 100));
+                    (<HTMLElement>element.querySelector(".unit-altitude")).innerText = "FL" + zeroAppend(Math.floor(mToFt(this.#position.alt as number) / 100), 3);
                 if (element.querySelector(".unit-speed"))
                     (<HTMLElement>element.querySelector(".unit-speed")).innerText = String(Math.floor(msToKnots(this.#speed))) + "GS";
 
diff --git a/client/src/weapon/weapon.ts b/client/src/weapon/weapon.ts
index 2930f3b4..b157cff4 100644
--- a/client/src/weapon/weapon.ts
+++ b/client/src/weapon/weapon.ts
@@ -1,6 +1,6 @@
 import { LatLng, DivIcon, Map } from 'leaflet';
 import { getApp } from '..';
-import { enumToCoalition, mToFt, msToKnots, rad2deg } from '../other/utils';
+import { enumToCoalition, mToFt, msToKnots, rad2deg, zeroAppend } from '../other/utils';
 import { CustomMarker } from '../map/markers/custommarker';
 import { SVGInjector } from '@tanem/svg-injector';
 import { DLINK, DataIndexes, GAME_MASTER, IRST, OPTIC, RADAR, VISUAL } from '../constants/constants';
@@ -230,7 +230,7 @@ export class Weapon extends CustomMarker {
 
                 /* Set altitude and speed */
                 if (element.querySelector(".unit-altitude"))
-                    (<HTMLElement>element.querySelector(".unit-altitude")).innerText = "FL" + String(Math.floor(mToFt(this.#position.alt as number) / 100));
+                    (<HTMLElement>element.querySelector(".unit-altitude")).innerText = "FL" + zeroAppend(Math.floor(mToFt(this.#position.alt as number) / 100), 3);
                 if (element.querySelector(".unit-speed"))
                     (<HTMLElement>element.querySelector(".unit-speed")).innerText = String(Math.floor(msToKnots(this.#speed))) + "GS";