diff --git a/src/util/config.js b/src/util/config.js
index 0d8ad3017f8..58a55f04359 100644
--- a/src/util/config.js
+++ b/src/util/config.js
@@ -2,7 +2,7 @@
 
 type Config = {|
   API_URL: string,
-  EVENTS_URL: string,
+  EVENTS_URL: ?string,
   FEEDBACK_URL: string,
   REQUIRE_ACCESS_TOKEN: boolean,
   ACCESS_TOKEN: ?string,
@@ -12,10 +12,13 @@ type Config = {|
 const config: Config = {
     API_URL: 'https://api.mapbox.com',
     get EVENTS_URL() {
+        if (!this.API_URL) { return null; }
         if (this.API_URL.indexOf('https://api.mapbox.cn') === 0) {
             return 'https://events.mapbox.cn/events/v2';
-        } else {
+        } else if (this.API_URL.indexOf('https://api.mapbox.com') === 0) {
             return 'https://events.mapbox.com/events/v2';
+        } else {
+            return null;
         }
     },
     FEEDBACK_URL: 'https://apps.mapbox.com/feedback',
diff --git a/src/util/mapbox.js b/src/util/mapbox.js
index a0b9c89bcd9..9752b2a4aec 100644
--- a/src/util/mapbox.js
+++ b/src/util/mapbox.js
@@ -253,6 +253,7 @@ class TelemetryEvent {
     * to TelemetryEvent#saveData
     */
     postEvent(timestamp: number, additionalPayload: {[string]: any}, callback: (err: ?Error) => void) {
+        if (!config.EVENTS_URL) return;
         const eventsUrlObject: UrlObject = parseUrl(config.EVENTS_URL);
         eventsUrlObject.params.push(`access_token=${config.ACCESS_TOKEN || ''}`);
         const payload: Object = {
@@ -297,7 +298,8 @@ export class MapLoadEvent extends TelemetryEvent {
     postMapLoadEvent(tileUrls: Array<string>, mapId: number) {
         //Enabled only when Mapbox Access Token is set and a source uses
         // mapbox tiles.
-        if (config.ACCESS_TOKEN &&
+        if (config.EVENTS_URL &&
+            config.ACCESS_TOKEN &&
             Array.isArray(tileUrls) &&
             tileUrls.some(url => isMapboxURL(url) || isMapboxHTTPURL(url))) {
             this.queueRequest({id: mapId, timestamp: Date.now()});
@@ -336,7 +338,8 @@ export class TurnstileEvent extends TelemetryEvent {
     postTurnstileEvent(tileUrls: Array<string>) {
         //Enabled only when Mapbox Access Token is set and a source uses
         // mapbox tiles.
-        if (config.ACCESS_TOKEN &&
+        if (config.EVENTS_URL &&
+            config.ACCESS_TOKEN &&
             Array.isArray(tileUrls) &&
             tileUrls.some(url => isMapboxURL(url) || isMapboxHTTPURL(url))) {
             this.queueRequest(Date.now());
diff --git a/test/unit/util/mapbox.test.js b/test/unit/util/mapbox.test.js
index 5fa3f3a45b2..9e37fdfa4ea 100644
--- a/test/unit/util/mapbox.test.js
+++ b/test/unit/util/mapbox.test.js
@@ -29,6 +29,7 @@ test("mapbox", (t) => {
     t.beforeEach((callback) => {
         config.ACCESS_TOKEN = 'key';
         config.REQUIRE_ACCESS_TOKEN = true;
+        config.API_URL = 'https://api.mapbox.com';
         callback();
     });
 
@@ -64,13 +65,11 @@ test("mapbox", (t) => {
         });
 
         t.test('handles custom API_URLs with paths', (t) => {
-            const previousUrl = config.API_URL;
             config.API_URL = 'https://test.example.com/api.mapbox.com';
             t.equal(
                 mapbox.normalizeStyleURL('mapbox://styles/foo/bar'),
                 'https://test.example.com/api.mapbox.com/styles/v1/foo/bar?access_token=key'
             );
-            config.API_URL = previousUrl;
             t.end();
         });
 
@@ -118,13 +117,11 @@ test("mapbox", (t) => {
         });
 
         t.test('handles custom API_URLs with paths', (t) => {
-            const previousUrl = config.API_URL;
             config.API_URL = 'https://test.example.com/api.mapbox.com';
             t.equal(
                 mapbox.normalizeSourceURL('mapbox://one.a'),
                 'https://test.example.com/api.mapbox.com/v4/one.a.json?secure&access_token=key'
             );
-            config.API_URL = previousUrl;
             t.end();
         });
 
@@ -148,13 +145,11 @@ test("mapbox", (t) => {
         });
 
         t.test('handles custom API_URLs with paths', (t) => {
-            const previousUrl = config.API_URL;
             config.API_URL = 'https://test.example.com/api.mapbox.com';
             t.equal(
                 mapbox.normalizeGlyphsURL('mapbox://fonts/boxmap/{fontstack}/{range}.pbf'),
                 'https://test.example.com/api.mapbox.com/fonts/v1/boxmap/{fontstack}/{range}.pbf?access_token=key'
             );
-            config.API_URL = previousUrl;
             t.end();
         });
 
@@ -216,13 +211,11 @@ test("mapbox", (t) => {
         });
 
         t.test('handles custom API_URLs with paths', (t) => {
-            const previousUrl = config.API_URL;
             config.API_URL = 'https://test.example.com/api.mapbox.com';
             t.equal(
                 mapbox.normalizeSpriteURL('mapbox://sprites/mapbox/streets-v8', '', '.json'),
                 'https://test.example.com/api.mapbox.com/styles/v1/mapbox/streets-v8/sprite.json?access_token=key'
             );
-            config.API_URL = previousUrl;
             t.end();
         });
 
@@ -412,7 +405,6 @@ test("mapbox", (t) => {
         });
 
         t.test('POSTs cn event when API_URL change to cn endpoint', (t) => {
-            const previousUrl = config.API_URL;
             config.API_URL = 'https://api.mapbox.cn';
 
             event.postTurnstileEvent(mapboxTileURLs);
@@ -421,7 +413,20 @@ test("mapbox", (t) => {
             req.respond(200);
 
             t.true(req.url.indexOf('https://events.mapbox.cn') > -1);
-            config.API_URL = previousUrl;
+            t.end();
+        });
+
+        t.test('POSTs no event when API_URL unavailable', (t) => {
+            config.API_URL = null;
+            event.postTurnstileEvent(mapboxTileURLs);
+            t.equal(window.server.requests.length, 0, 'no events posted');
+            t.end();
+        });
+
+        t.test('POSTs no event when API_URL non-standard', (t) => {
+            config.API_URL = 'https://api.example.com';
+            event.postTurnstileEvent(mapboxTileURLs);
+            t.equal(window.server.requests.length, 0, 'no events posted');
             t.end();
         });
 
@@ -465,7 +470,6 @@ test("mapbox", (t) => {
 
             t.test('POSTs event when previously stored anonId is not a valid uuid', (t) => {
                 const now = +Date.now();
-
                 window.localStorage.setItem(`mapbox.eventData.uuid:${config.ACCESS_TOKEN}`, 'anonymous');
                 window.localStorage.setItem(`mapbox.eventData:${config.ACCESS_TOKEN}`, JSON.stringify({
                     lastSuccess: now
@@ -720,7 +724,6 @@ test("mapbox", (t) => {
         });
 
         t.test('POSTs cn event when API_URL changes to cn endpoint', (t) => {
-            const previousUrl = config.API_URL;
             config.API_URL = 'https://api.mapbox.cn';
 
             event.postMapLoadEvent(mapboxTileURLs, 1);
@@ -729,7 +732,20 @@ test("mapbox", (t) => {
             req.respond(200);
 
             t.true(req.url.indexOf('https://events.mapbox.cn') > -1);
-            config.API_URL = previousUrl;
+            t.end();
+        });
+
+        t.test('POSTs no event when API_URL unavailable', (t) => {
+            config.API_URL = null;
+            event.postMapLoadEvent(mapboxTileURLs, 1);
+            t.equal(window.server.requests.length, 0, 'no events posted');
+            t.end();
+        });
+
+        t.test('POSTs no event when API_URL is non-standard', (t) => {
+            config.API_URL = "https://api.example.com";
+            event.postMapLoadEvent(mapboxTileURLs, 1);
+            t.equal(window.server.requests.length, 0, 'no events posted');
             t.end();
         });