diff --git a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
index c8df8b21..9bae339b 100644
--- a/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
+++ b/lib/cartodb/models/mapconfig/adapter/mapconfig-overviews-adapter.js
@@ -30,25 +30,23 @@ MapConfigOverviewsAdapter.prototype.getMapConfig = function (user, requestMapCon
             } else {
                 var query_rewrite_data = { overviews: metadata };
 
-                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;
-                        }
+                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) {