diff --git a/lib/cartodb/models/dataview/histogram.js b/lib/cartodb/models/dataview/histogram.js
index 3d758b17..271c3e95 100644
--- a/lib/cartodb/models/dataview/histogram.js
+++ b/lib/cartodb/models/dataview/histogram.js
@@ -1,4 +1,3 @@
-const _ = require('underscore');
 const BaseWidget = require('./base');
 const debug = require('debug')('windshaft:dataview:histogram');