diff --git a/lib/cartodb/api/api-router.js b/lib/cartodb/api/api-router.js
index 3f0f7ac0..5a08eb6d 100644
--- a/lib/cartodb/api/api-router.js
+++ b/lib/cartodb/api/api-router.js
@@ -17,7 +17,7 @@ const AuthBackend = require('../backends/auth');
 const UserLimitsApi = require('../backends/api/user_limits_api');
 const OverviewsMetadataBackend = require('../backends/overviews-metadata');
 const FilterStatsApi = require('../backends/filter-stats');
-const TablesExtentApi = require('../backends/api/tables_extent_api');
+const TablesExtentBackend = require('../backends/tables-extent');
 
 const LayergroupAffectedTablesCache = require('../cache/layergroup_affected_tables');
 const SurrogateKeysCache = require('../cache/surrogate_keys_cache');
@@ -125,7 +125,7 @@ module.exports = class ApiRouter {
         const overviewsMetadataBackend = new OverviewsMetadataBackend(pgQueryRunner);
 
         const filterStatsBackend = new FilterStatsApi(pgQueryRunner);
-        const tablesExtentApi = new TablesExtentApi(pgQueryRunner);
+        const tablesExtentBackend = new TablesExtentBackend(pgQueryRunner);
 
         const mapConfigAdapter = new MapConfigAdapter(
             new MapConfigNamedLayersAdapter(templateMaps, pgConnection),
@@ -173,7 +173,7 @@ module.exports = class ApiRouter {
             statsBackend,
             layergroupMetadata,
             namedMapProviderCache,
-            tablesExtentApi
+            tablesExtentBackend
         };
 
         this.mapRouter = new MapRouter({ collaborators });
diff --git a/lib/cartodb/api/map/map-router.js b/lib/cartodb/api/map/map-router.js
index 2e2a3f4a..78b87d1e 100644
--- a/lib/cartodb/api/map/map-router.js
+++ b/lib/cartodb/api/map/map-router.js
@@ -30,7 +30,7 @@ module.exports = class MapRouter {
             statsBackend,
             layergroupMetadata,
             namedMapProviderCache,
-            tablesExtentApi
+            tablesExtentBackend
         } = collaborators;
 
         this.analysisLayergroupController = new AnalysisLayergroupController(
@@ -101,7 +101,7 @@ module.exports = class MapRouter {
             namedMapProviderCache,
             previewBackend,
             surrogateKeysCache,
-            tablesExtentApi,
+            tablesExtentBackend,
             metadataBackend,
             pgConnection,
             authBackend,
diff --git a/lib/cartodb/api/map/preview-template-controller.js b/lib/cartodb/api/map/preview-template-controller.js
index 73a194e6..acf58a91 100644
--- a/lib/cartodb/api/map/preview-template-controller.js
+++ b/lib/cartodb/api/map/preview-template-controller.js
@@ -26,7 +26,7 @@ function PreviewTemplateController (
     namedMapProviderCache,
     previewBackend,
     surrogateKeysCache,
-    tablesExtentApi,
+    tablesExtentBackend,
     metadataBackend,
     pgConnection,
     authBackend,
@@ -35,7 +35,7 @@ function PreviewTemplateController (
     this.namedMapProviderCache = namedMapProviderCache;
     this.previewBackend = previewBackend;
     this.surrogateKeysCache = surrogateKeysCache;
-    this.tablesExtentApi = tablesExtentApi;
+    this.tablesExtentBackend = tablesExtentBackend;
     this.metadataBackend = metadataBackend;
     this.pgConnection = pgConnection;
     this.authBackend = authBackend;
@@ -61,7 +61,7 @@ PreviewTemplateController.prototype.register = function (mapRouter) {
             namedMapProviderCache: this.namedMapProviderCache,
             label: 'STATIC_VIZ_MAP'
         }),
-        getStaticImageOptions({ tablesExtentApi: this.tablesExtentApi }),
+        getStaticImageOptions({ tablesExtentBackend: this.tablesExtentBackend }),
         getImage({ previewBackend: this.previewBackend, label: 'STATIC_VIZ_MAP' }),
         setContentTypeHeader(),
         incrementMapViews({ metadataBackend: this.metadataBackend }),
@@ -138,7 +138,7 @@ function prepareLayerFilterFromPreviewLayers ({ namedMapProviderCache, label })
     };
 }
 
-function getStaticImageOptions ({ tablesExtentApi }) {
+function getStaticImageOptions ({ tablesExtentBackend }) {
     return function getStaticImageOptionsMiddleware(req, res, next) {
         const { user, mapConfigProvider, template } = res.locals;
         const { zoom, lon, lat, bbox } = req.query;
@@ -164,7 +164,7 @@ function getStaticImageOptions ({ tablesExtentApi }) {
                 return next();
             }
 
-            tablesExtentApi.getBounds(user, tables, (err, bounds) => {
+            tablesExtentBackend.getBounds(user, tables, (err, bounds) => {
                 if (err) {
                     return next();
                 }
diff --git a/lib/cartodb/backends/api/tables_extent_api.js b/lib/cartodb/backends/tables-extent.js
similarity index 90%
rename from lib/cartodb/backends/api/tables_extent_api.js
rename to lib/cartodb/backends/tables-extent.js
index 7b534a3f..5e78a6b1 100644
--- a/lib/cartodb/backends/api/tables_extent_api.js
+++ b/lib/cartodb/backends/tables-extent.js
@@ -1,8 +1,8 @@
-function TablesExtentApi(pgQueryRunner) {
+function TablesExtentBackend(pgQueryRunner) {
     this.pgQueryRunner = pgQueryRunner;
 }
 
-module.exports = TablesExtentApi;
+module.exports = TablesExtentBackend;
 
 /**
  * Given a username and a list of tables it will return the estimated extent in SRID 4326 for all the tables based on
@@ -13,7 +13,7 @@ module.exports = TablesExtentApi;
  *  `table_name` format as valid input
  * @param {Function} callback function(err, result) {Object} result with `west`, `south`, `east`, `north`
  */
-TablesExtentApi.prototype.getBounds = function (username, tables, callback) {
+TablesExtentBackend.prototype.getBounds = function (username, tables, callback) {
     var estimatedExtentSQLs = tables.map(function(table) {
         return "ST_EstimatedExtent('" + table.schema_name + "', '" + table.table_name + "', 'the_geom_webmercator')";
     });