diff --git a/public/resources/elevation-control.js b/public/resources/elevation-control.js
index a1fda61b1..8821eaeec 100644
--- a/public/resources/elevation-control.js
+++ b/public/resources/elevation-control.js
@@ -18,7 +18,7 @@ class ElevationInfoControl {
 
       map.on('click', (e) => {
         var url = this.url;
-        var coord = {"z": Math.floor(map.getZoom()), "x": e.lngLat["lng"], "y": e.lngLat["lat"]};
+        var coord = {"z": Math.floor(map.getZoom()), "x": e.lngLat["lng"].toFixed(7), "y": e.lngLat["lat"].toFixed(7)};
         for(var key in coord) {
           url = url.replace(new RegExp('{'+ key +'}','g'), coord[key]);
         }
diff --git a/src/serve_data.js b/src/serve_data.js
index 6369aa21d..5493ff2c7 100644
--- a/src/serve_data.js
+++ b/src/serve_data.js
@@ -259,8 +259,8 @@ export const serve_data = {
 
         let data = fetchTile.data;
         var param = {
-          long: bbox[0],
-          lat: bbox[1],
+          long: bbox[0].toFixed(7),
+          lat: bbox[1].toFixed(7),
           encoding,
           format,
           tile_size: TILE_SIZE,