diff --git a/index.html b/index.html
index 096980a..b33743f 100644
--- a/index.html
+++ b/index.html
@@ -25,14 +25,14 @@
 
 map.on('load', function() {
 
-    //add nfwf with correct srs update
+    //add nfwf with correct srs update with bbox
     map.addLayer({
         'id': 'wms-test-layer',
         'type': 'raster',
         'source': {
             'type': 'raster',
             'tiles': [
-                'https://gis.nemac.org/nfwf?format=image/png&service=WMS&version=1.1.1&request=GetMap&srs=EPSG:4326&width=256&height=256&layers=NA_ExposureIndex'
+                'https://gis.nemac.org/nfwf?bbox={bbox-epsg-3857}&format=image/png&service=WMS&version=1.1.1&request=GetMap&srs=EPSG:4326&width=256&height=256&layers=NA_ExposureIndex'
             ],
             'tileSize': 256
         },