diff --git a/lib/cartodb/api/api-router.js b/lib/cartodb/api/api-router.js
index c4124ac8..14c7acec 100644
--- a/lib/cartodb/api/api-router.js
+++ b/lib/cartodb/api/api-router.js
@@ -100,7 +100,8 @@ module.exports = class ApiRouter {
 
         const tileBackend = new windshaft.backend.Tile(rendererCache);
         const attributesBackend = new windshaft.backend.Attributes();
-        const concurrency = serverOptions.renderer.mapnik.poolSize + serverOptions.renderer.mapnik.poolMaxWaitingClients;
+        const concurrency = serverOptions.renderer.mapnik.poolSize +
+                            serverOptions.renderer.mapnik.poolMaxWaitingClients;
         const previewBackend = new windshaft.backend.Preview(rendererCache, { concurrency });
         const mapValidatorBackend = new windshaft.backend.MapValidator(tileBackend, attributesBackend);
         const mapBackend = new windshaft.backend.Map(rendererCache, mapStore, mapValidatorBackend);