diff --git a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
index a104c592..308b078d 100644
--- a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
+++ b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
@@ -9,93 +9,93 @@ function MapConfigOverviewsAdapter(overviewsMetadataBackend, filterStatsBackend)
 
 module.exports = MapConfigOverviewsAdapter;
 
-MapConfigOverviewsAdapter.prototype.getMapConfig = function(user, requestMapConfig, params, context, callback) {
-  var self = this;
+MapConfigOverviewsAdapter.prototype.getMapConfig = function (user, requestMapConfig, params, context, callback) {
+    var self = this;
 
-  var layers = requestMapConfig.layers;
-  var analysesResults = context.analysesResults;
-
-  if (!layers || layers.length === 0) {
-      return callback(null, requestMapConfig);
-  }
-
-  var augmentLayersQueue = queue(layers.length);
-
-  function augmentLayer(layer, done) {
-      if ( layer.type !== 'mapnik' && layer.type !== 'cartodb' ) {
-          return done(null, layer);
-      }
-      self.overviewsMetadataBackend.getOverviewsMetadata(user, layer.options.sql, function(err, metadata){
-           if (err) {
-               done(err, layer);
-           } else {
-               var query_rewrite_data = { overviews: metadata };
-               step(
-                   function collectFiltersData() {
-                       var filters, unfiltered_query;
-                       if ( layer.options.source && analysesResults && !layer.options.sql_wrap) {
-                           var sourceId = layer.options.source.id;
-                           var node = _.find(analysesResults, function(a){ return a.rootNode.params.id === sourceId; });
-                           if ( node ) {
-                               node = node.rootNode;
-                               filters = node.getFilters();
-                               var filters_disabler = Object.keys(filters).reduce(
-                                   function(disabler, filter_id){ disabler[filter_id] = false; return disabler; },
-                                   {}
-                               );
-                               unfiltered_query = node.getQuery(filters_disabler);
-                               query_rewrite_data.filters = filters;
-                               query_rewrite_data.unfiltered_query = unfiltered_query;
-                           }
-                       }
-                       this(null, filters, unfiltered_query);
-                   },
-                   function collectStatsData(err, filters, unfiltered_query) {
-                       var next_step = this;
-                       if ( filters ) {
-                           self.filterStatsBackend.getFilterStats(
-                               user,
-                               unfiltered_query, filters,
-                               function(err, stats) {
-                                 if ( !err ) {
-                                     query_rewrite_data.filter_stats = stats;
-                                 }
-                                 return next_step(err);
-                               }
-                           );
-                       } else {
-                           return next_step(null);
-                       }
-                   },
-                   function addDataToLayer(err) {
-                       if ( !err && !_.isEmpty(metadata) ) {
-                           layer = _.extend({}, layer);
-                           layer.options = _.extend({}, layer.options, { query_rewrite_data: query_rewrite_data });
-                       }
-                       done(null, layer);
-                   }
-               );
-           }
-      });
-  }
-
-  function layersAugmentQueueFinish(err, layers) {
-    if (err) {
-        return callback(err);
-    }
+    var layers = requestMapConfig.layers;
+    var analysesResults = context.analysesResults;
 
     if (!layers || layers.length === 0) {
-        return callback(new Error('Missing layers array from layergroup config'));
+        return callback(null, requestMapConfig);
     }
 
-    requestMapConfig.layers = layers;
+    var augmentLayersQueue = queue(layers.length);
 
-    return callback(null, requestMapConfig);
-  }
+    function augmentLayer(layer, done) {
+        if (layer.type !== 'mapnik' && layer.type !== 'cartodb') {
+            return done(null, layer);
+        }
+        self.overviewsMetadataBackend.getOverviewsMetadata(user, layer.options.sql, function (err, metadata) {
+            if (err) {
+                done(err, layer);
+            } else {
+                var query_rewrite_data = { overviews: metadata };
+                step(
+                    function collectFiltersData() {
+                        var filters, unfiltered_query;
+                        if (layer.options.source && analysesResults && !layer.options.sql_wrap) {
+                            var sourceId = layer.options.source.id;
+                            var node = _.find(analysesResults, function (a) { return a.rootNode.params.id === sourceId; });
+                            if (node) {
+                                node = node.rootNode;
+                                filters = node.getFilters();
+                                var filters_disabler = Object.keys(filters).reduce(
+                                    function (disabler, filter_id) { disabler[filter_id] = false; return disabler; },
+                                    {}
+                                );
+                                unfiltered_query = node.getQuery(filters_disabler);
+                                query_rewrite_data.filters = filters;
+                                query_rewrite_data.unfiltered_query = unfiltered_query;
+                            }
+                        }
+                        this(null, filters, unfiltered_query);
+                    },
+                    function collectStatsData(err, filters, unfiltered_query) {
+                        var next_step = this;
+                        if (filters) {
+                            self.filterStatsBackend.getFilterStats(
+                                user,
+                                unfiltered_query, filters,
+                                function (err, stats) {
+                                    if (!err) {
+                                        query_rewrite_data.filter_stats = stats;
+                                    }
+                                    return next_step(err);
+                                }
+                            );
+                        } else {
+                            return next_step(null);
+                        }
+                    },
+                    function addDataToLayer(err) {
+                        if (!err && !_.isEmpty(metadata)) {
+                            layer = _.extend({}, layer);
+                            layer.options = _.extend({}, layer.options, { query_rewrite_data: query_rewrite_data });
+                        }
+                        done(null, layer);
+                    }
+                );
+            }
+        });
+    }
 
-  layers.forEach(function(layer) {
-      augmentLayersQueue.defer(augmentLayer, layer);
-  });
-  augmentLayersQueue.awaitAll(layersAugmentQueueFinish);
+    function layersAugmentQueueFinish(err, layers) {
+        if (err) {
+            return callback(err);
+        }
+
+        if (!layers || layers.length === 0) {
+            return callback(new Error('Missing layers array from layergroup config'));
+        }
+
+        requestMapConfig.layers = layers;
+
+        return callback(null, requestMapConfig);
+    }
+
+    layers.forEach(function (layer) {
+        augmentLayersQueue.defer(augmentLayer, layer);
+    });
+    augmentLayersQueue.awaitAll(layersAugmentQueueFinish);
 
 };