diff --git a/lib/cartodb/models/dataview/histogram.js b/lib/cartodb/models/dataview/histogram.js
index 3e9868d9..9ab349df 100644
--- a/lib/cartodb/models/dataview/histogram.js
+++ b/lib/cartodb/models/dataview/histogram.js
@@ -495,14 +495,14 @@ module.exports = class Histogram extends BaseWidget {
                 _aggregation: _aggregation,
                 _start: this.getBinStart(override),
                 _end: this.getBinEnd(override),
-                _offset: parseOffset(_offset, _aggregation)
+                _offset: this.parseOffset(_offset, _aggregation)
             });
         } else {
             dateBasicsQuery = dateBasicsQueryTpl({
                 _query: _query,
                 _column: _column,
                 _aggregation: _aggregation,
-                _offset: parseOffset(_offset, _aggregation)
+                _offset: this.parseOffset(_offset, _aggregation)
             });
         }
 
@@ -521,7 +521,7 @@ module.exports = class Histogram extends BaseWidget {
             _query: _query,
             _column: _column,
             _aggregation: _aggregation,
-            _offset: parseOffset(_offset, _aggregation)
+            _offset: this.parseOffset(_offset, _aggregation)
         });
 
         var histogramSql = [
@@ -708,6 +708,18 @@ module.exports = class Histogram extends BaseWidget {
 
         return width;
     }
+
+    parseOffset (offset, aggregation) {
+        if (!offset) {
+            return '0';
+        }
+        if (aggregation === 'hour' || aggregation === 'minute') {
+            return '0';
+        }
+
+        var offsetInHours = Math.ceil(offset / 3600);
+        return '' + offsetInHours;
+    }
 };
 
 var DATE_AGGREGATIONS = {
@@ -720,17 +732,3 @@ var DATE_AGGREGATIONS = {
     'quarter': true,
     'year': true
 };
-
-
-function parseOffset(offset, aggregation) {
-    if (!offset) {
-        return '0';
-    }
-    if (aggregation === 'hour' || aggregation === 'minute') {
-        return '0';
-    }
-
-    var offsetInHours = Math.ceil(offset / 3600);
-    return '' + offsetInHours;
-}
-