diff --git a/lib/MapboxInspector.js b/lib/MapboxInspector.js
index <HASH>..<HASH> 100644
--- a/lib/MapboxInspector.js
+++ b/lib/MapboxInspector.js
@@ -4,7 +4,12 @@ var isEqual = require('lodash.isequal');
 var renderPopup = require('./renderPopup');
 
 var mapboxgl = window.mapboxgl;
-if (!mapboxgl) {
+if (mapboxgl) {
+  var versions = mapboxgl.version.split('.').map(parseFloat);
+  if (versions[0] < 1 && versions[1] < 29) {
+    console.error('MapboxInspector only supports Mapbox GL JS >= v0.29.0. Please upgrade your Mapbox GL JS version.');
+  }
+} else {
   console.error('Mapbox GL JS can not be found. Make sure to include it.');
 }
Issue warning on old Mapbox GL versions