diff --git a/README.md b/README.md
index 044b31e..7543105 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Vector and raster maps with GL styles. Server side rendering by Mapbox GL Native
 
 ## Get Started
 
-Make sure you have Node.js version **6** installed (running `node -v` it should output something like `v6.11.3`).
+Make sure you have Node.js version **10** installed (running `node -v` it should output something like `v10.17.0`).
 
 Install `tileserver-gl` with server-side raster rendering of vector tiles with npm
 
diff --git a/docs/installation.rst b/docs/installation.rst
index 686e114..5e30ead 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -41,7 +41,7 @@ Alternatively, you can use ``tileserver-gl-light`` package instead, which is pur
 From source
 ===========
 
-Make sure you have Node v6 (nvm install 6) and run::
+Make sure you have Node v10 (nvm install 10) and run::
 
   npm install
   node .
diff --git a/src/serve_rendered.js b/src/serve_rendered.js
index d79cdba..84fd06a 100644
--- a/src/serve_rendered.js
+++ b/src/serve_rendered.js
@@ -142,6 +142,7 @@ module.exports = (options, repo, params, id, publicUrl, dataResolver) => {
   const createPool = (ratio, min, max) => {
     const createRenderer = (ratio, createCallback) => {
       const renderer = new mbgl.Map({
+        mode: "tile",
         ratio: ratio,
         request: (req, callback) => {
           const protocol = req.url.split(':')[0];
@@ -415,8 +416,8 @@ module.exports = (options, repo, params, id, publicUrl, dataResolver) => {
 
       const tileMargin = Math.max(options.tileMargin || 0, 0);
       if (z > 2 && tileMargin > 0) {
-        params.width += tileMargin * 2 * scale;
-        params.height += tileMargin * 2 * scale;
+        params.width += tileMargin * 2;
+        params.height += tileMargin * 2;
       }
 
       renderer.render(params, (err, data) => {