diff --git a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
index ff9ecbf6..906f0566 100644
--- a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
+++ b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
@@ -28,8 +28,7 @@ MapConfigOverviewsAdapter.prototype.getMapConfig = function (user, requestMapCon
         const layers = results.map(result => result.layer);
         const overviewsAddedToMapconfig = results
                                .map(result => result.overviewsAddedToMapconfig)
-                               .reduce((overviewsInMapconfig,overviewsInLayer)=>overviewsInMapconfig||overviewsInLayer,
-                                        false);
+                               .some(overviewsInLayer => overviewsInLayer);
 
         if (!layers || layers.length === 0) {
             return callback(new Error('Missing layers array from layergroup config'));