diff --git a/frontend/src/components/projectCreate/projectCreationMap.js b/frontend/src/components/projectCreate/projectCreationMap.js
index 9e98a292d2..89765e0a28 100644
--- a/frontend/src/components/projectCreate/projectCreationMap.js
+++ b/frontend/src/components/projectCreate/projectCreationMap.js
@@ -7,7 +7,9 @@ import MapboxLanguage from '@mapbox/mapbox-gl-language';
 import MapboxGeocoder from '@mapbox/mapbox-gl-geocoder';
 import '@mapbox/mapbox-gl-geocoder/dist/mapbox-gl-geocoder.css';
 import { useDropzone } from 'react-dropzone';
+
 import { mapboxLayerDefn } from '../projects/projectsMap';
+import useMapboxSupportedLanguage from '../../hooks/UseMapboxSupportedLanguage';
 
 import {
   MAPBOX_TOKEN,
@@ -31,7 +33,7 @@ try {
 
 const ProjectCreationMap = ({ mapObj, setMapObj, metadata, updateMetadata, step, uploadFile }) => {
   const mapRef = createRef();
-  const locale = useSelector((state) => state.preferences['locale']);
+  const mapboxSupportedLanguage = useMapboxSupportedLanguage();
   const token = useSelector((state) => state.auth.token);
   const [showProjectsAOILayer, setShowProjectsAOILayer] = useState(true);
   const [aoiCanBeActivated, setAOICanBeActivated] = useState(false);
@@ -85,7 +87,7 @@ const ProjectCreationMap = ({ mapObj, setMapObj, metadata, updateMetadata, step,
       attributionControl: false,
     })
       .addControl(new mapboxgl.AttributionControl({ compact: false }))
-      .addControl(new MapboxLanguage({ defaultLanguage: locale.substr(0, 2) || 'en' }))
+      .addControl(new MapboxLanguage({ defaultLanguage: mapboxSupportedLanguage }))
       .addControl(new mapboxgl.ScaleControl({ unit: 'metric' }));
     if (MAPBOX_TOKEN) {
       map.addControl(
@@ -94,7 +96,7 @@ const ProjectCreationMap = ({ mapObj, setMapObj, metadata, updateMetadata, step,
           mapboxgl: mapboxgl,
           marker: false,
           collapsed: true,
-          language: locale.substr(0, 2) || 'en',
+          language: mapboxSupportedLanguage,
         }),
         'top-right',
       );
diff --git a/frontend/src/components/projectEdit/priorityAreasForm.js b/frontend/src/components/projectEdit/priorityAreasForm.js
index f0c7bd7d35..25574bca2b 100644
--- a/frontend/src/components/projectEdit/priorityAreasForm.js
+++ b/frontend/src/components/projectEdit/priorityAreasForm.js
@@ -1,5 +1,4 @@
 import { useState, useContext, useLayoutEffect, createRef } from 'react';
-import { useSelector } from 'react-redux';
 import mapboxgl from 'mapbox-gl';
 import 'mapbox-gl/dist/mapbox-gl.css';
 import '@mapbox/mapbox-gl-draw/dist/mapbox-gl-draw.css';
@@ -25,6 +24,7 @@ import {
 import { getErrorMsg } from '../projectCreate/fileUploadErrors';
 import { Alert } from '../alert';
 import WebglUnsupported from '../webglUnsupported';
+import useMapboxSupportedLanguage from '../../hooks/UseMapboxSupportedLanguage';
 
 mapboxgl.accessToken = MAPBOX_TOKEN;
 try {
@@ -35,7 +35,7 @@ try {
 
 export const PriorityAreasForm = () => {
   const { projectInfo, setProjectInfo } = useContext(StateContext);
-  const locale = useSelector((state) => state.preferences['locale']);
+  const mapboxSupportedLanguage = useMapboxSupportedLanguage();
   const mapRef = createRef();
   const [error, setError] = useState({ error: false, message: null });
 
@@ -129,7 +129,7 @@ export const PriorityAreasForm = () => {
         attributionControl: false,
       })
         .addControl(new mapboxgl.AttributionControl({ compact: false }))
-        .addControl(new MapboxLanguage({ defaultLanguage: locale.substr(0, 2) || 'en' }))
+        .addControl(new MapboxLanguage({ defaultLanguage: mapboxSupportedLanguage }))
         .addControl(new mapboxgl.NavigationControl());
 
     setMapObj({ ...mapObj, map: map });
diff --git a/frontend/src/components/projects/projectsMap.js b/frontend/src/components/projects/projectsMap.js
index 762cfc37ad..64f7a7bb6e 100644
--- a/frontend/src/components/projects/projectsMap.js
+++ b/frontend/src/components/projects/projectsMap.js
@@ -1,5 +1,4 @@
 import { createRef, useLayoutEffect, useState, useCallback } from 'react';
-import { useSelector } from 'react-redux';
 import mapboxgl from 'mapbox-gl';
 import 'mapbox-gl/dist/mapbox-gl.css';
 import MapboxLanguage from '@mapbox/mapbox-gl-language';
@@ -7,6 +6,7 @@ import MapboxLanguage from '@mapbox/mapbox-gl-language';
 import WebglUnsupported from '../webglUnsupported';
 import { MAPBOX_TOKEN, MAP_STYLE, MAPBOX_RTL_PLUGIN_URL } from '../../config';
 import mapMarker from '../../assets/img/mapMarker.png';
+import useMapboxSupportedLanguage from '../../hooks/UseMapboxSupportedLanguage';
 
 let markerIcon = new Image(17, 20);
 markerIcon.src = mapMarker;
@@ -97,8 +97,8 @@ export const mapboxLayerDefn = (map, mapResults, clickOnProjectID, disablePoiCli
 
 export const ProjectsMap = ({ mapResults, fullProjectsQuery, setQuery, className }) => {
   const mapRef = createRef();
-  const locale = useSelector((state) => state.preferences['locale']);
   const [map, setMapObj] = useState(null);
+  const mapboxSupportedLanguage = useMapboxSupportedLanguage();
 
   const clickOnProjectID = useCallback(
     (projectIdSearch) =>
@@ -131,7 +131,7 @@ export const ProjectsMap = ({ mapResults, fullProjectsQuery, setQuery, className
           attributionControl: false,
         })
           .addControl(new mapboxgl.AttributionControl({ compact: false }))
-          .addControl(new MapboxLanguage({ defaultLanguage: locale.substr(0, 2) || 'en' })),
+          .addControl(new MapboxLanguage({ defaultLanguage: mapboxSupportedLanguage })),
       );
 
     return () => {
diff --git a/frontend/src/components/taskSelection/map.js b/frontend/src/components/taskSelection/map.js
index 4c0b644bd2..d5236a3159 100644
--- a/frontend/src/components/taskSelection/map.js
+++ b/frontend/src/components/taskSelection/map.js
@@ -11,6 +11,7 @@ import messages from './messages';
 import { MAPBOX_TOKEN, TASK_COLOURS, MAP_STYLE, MAPBOX_RTL_PLUGIN_URL } from '../../config';
 import lock from '../../assets/img/lock.png';
 import redlock from '../../assets/img/red-lock.png';
+import useMapboxSupportedLanguage from '../../hooks/UseMapboxSupportedLanguage';
 
 let lockIcon = new Image(17, 20);
 lockIcon.src = lock;
@@ -42,7 +43,7 @@ export const TasksMap = ({
 }) => {
   const intl = useIntl();
   const mapRef = createRef();
-  const locale = useSelector((state) => state.preferences['locale']);
+  const mapboxSupportedLanguage = useMapboxSupportedLanguage();
   const authDetails = useSelector((state) => state.auth.userDetails);
   const [hoveredTaskId, setHoveredTaskId] = useState(null);
 
@@ -62,7 +63,7 @@ export const TasksMap = ({
           attributionControl: false,
         })
           .addControl(new mapboxgl.AttributionControl({ compact: false }))
-          .addControl(new MapboxLanguage({ defaultLanguage: locale.substr(0, 2) || 'en' })),
+          .addControl(new MapboxLanguage({ defaultLanguage: mapboxSupportedLanguage })),
       );
 
     return () => {
diff --git a/frontend/src/components/userDetail/countriesMapped.js b/frontend/src/components/userDetail/countriesMapped.js
index 322a8d5f75..5f4fa1ee83 100644
--- a/frontend/src/components/userDetail/countriesMapped.js
+++ b/frontend/src/components/userDetail/countriesMapped.js
@@ -1,5 +1,4 @@
 import { createRef, useLayoutEffect, useState } from 'react';
-import { useSelector } from 'react-redux';
 import { useNavigate } from 'react-router-dom';
 import mapboxgl from 'mapbox-gl';
 import MapboxLanguage from '@mapbox/mapbox-gl-language';
@@ -10,6 +9,7 @@ import { MAPBOX_TOKEN, MAP_STYLE, MAPBOX_RTL_PLUGIN_URL } from '../../config';
 import { mapboxLayerDefn } from '../projects/projectsMap';
 import { BarListChart } from './barListChart';
 import WebglUnsupported from '../webglUnsupported';
+import useMapboxSupportedLanguage from '../../hooks/UseMapboxSupportedLanguage';
 
 mapboxgl.accessToken = MAPBOX_TOKEN;
 try {
@@ -20,7 +20,7 @@ try {
 
 const UserCountriesMap = ({ projects }) => {
   const navigate = useNavigate();
-  const locale = useSelector((state) => state.preferences['locale']);
+  const mapboxSupportedLanguage = useMapboxSupportedLanguage();
 
   const [map, setMap] = useState(null);
   const mapRef = createRef();
@@ -36,7 +36,7 @@ const UserCountriesMap = ({ projects }) => {
           attributionControl: false,
         })
           .addControl(new mapboxgl.AttributionControl({ compact: false }))
-          .addControl(new MapboxLanguage({ defaultLanguage: locale.substr(0, 2) || 'en' })),
+          .addControl(new MapboxLanguage({ defaultLanguage: mapboxSupportedLanguage })),
       );
 
     return () => {
diff --git a/frontend/src/hooks/UseMapboxSupportedLanguage.js b/frontend/src/hooks/UseMapboxSupportedLanguage.js
new file mode 100644
index 0000000000..577fb6407a
--- /dev/null
+++ b/frontend/src/hooks/UseMapboxSupportedLanguage.js
@@ -0,0 +1,23 @@
+import { useSelector } from 'react-redux';
+import MapboxLanguage from '@mapbox/mapbox-gl-language';
+
+const { supportedLanguages } = new MapboxLanguage();
+
+const defaultLocale = 'en';
+
+/**
+ * A React custom hook to check if the locale language is supported by Mapbox GL or not
+ *
+ * Returns `en` if the locale is not supported, else returns preferred locale
+ *
+ */
+export default function useMapboxSupportedLanguage() {
+  const locale = useSelector((state) => state.preferences.locale);
+
+  if (!locale) return defaultLocale;
+
+  const language = locale.substr(0, 2);
+  if (supportedLanguages.includes(language)) return language;
+
+  return defaultLocale;
+}