diff --git a/mapbox-gl/mapbox-gl-tests.ts b/mapbox-gl/mapbox-gl-tests.ts
index 6102b5c270..f77a9f4af7 100644
--- a/mapbox-gl/mapbox-gl-tests.ts
+++ b/mapbox-gl/mapbox-gl-tests.ts
@@ -1,3 +1,4 @@
+// These examples adapted from Mapbox's examples (https://www.mapbox.com/mapbox-gl-js/examples)
 /// <reference path="./mapbox-gl.d.ts" />
 /// <reference path="../geojson/geojson.d.ts" />