diff --git a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
index 2f55f3ff..074129ad 100644
--- a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
+++ b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
@@ -47,14 +47,14 @@ MapConfigOverviewsAdapter.prototype.getMapConfig = function (user, requestMapCon
 
 };
 
-function augmentLayer(overviewsMetadataBackend, filterStatsBackend, user, layer, analysesResults, done) {
+function augmentLayer(overviewsMetadataBackend, filterStatsBackend, user, layer, analysesResults, callback) {
     if (layer.type !== 'mapnik' && layer.type !== 'cartodb') {
-        return done(null, layer);
+        return callback(null, layer);
     }
 
     overviewsMetadataBackend.getOverviewsMetadata(user, layer.options.sql, function (err, metadata) {
         if (err) {
-            return done(err, layer);
+            return callback(err, layer);
         }
 
         var queryRewriteData = { overviews: metadata };
@@ -74,14 +74,14 @@ function augmentLayer(overviewsMetadataBackend, filterStatsBackend, user, layer,
                 layer.options = Object.assign({}, layer.options, { queryRewriteData });
             }
 
-            return done(null, layer);
+            return callback(null, layer);
         }
 
         var unfilteredQuery = queryRewriteData.unfiltered_query;
 
         filterStatsBackend.getFilterStats(user, unfilteredQuery, filters, function (err, stats) {
             if (err) {
-                return done(null, layer);
+                return callback(null, layer);
             }
 
             queryRewriteData.filter_stats = stats;
@@ -91,7 +91,7 @@ function augmentLayer(overviewsMetadataBackend, filterStatsBackend, user, layer,
                 layer.options = Object.assign({}, layer.options, { queryRewriteData });
             }
 
-            return done(null, layer);
+            return callback(null, layer);
         });
     });
 }