diff --git a/index.html b/index.html
index 445d2a6..a7effb3 100644
--- a/index.html
+++ b/index.html
@@ -32,7 +32,7 @@
         'source': {
             'type': 'raster',
             'tiles': [
-                'https://gis.nemac.org/nfwf?format=image/png&service=WMS&version=1.1.1&request=GetMap&width=256&height=256&layers=NA_ExposureIndex'
+                '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'
             ],
             'tileSize': 256
         },