diff --git a/lib/cartodb/models/dataview/histogram.js b/lib/cartodb/models/dataview/histogram.js
index 0e6279b8..6a5081c1 100644
--- a/lib/cartodb/models/dataview/histogram.js
+++ b/lib/cartodb/models/dataview/histogram.js
@@ -379,7 +379,7 @@ module.exports = class Histogram extends BaseWidget {
             basicsQuery = overrideBasicsQueryTpl({
                 _query: _query,
                 _column: _column,
-                _start: getBinStart(override),
+                _start: this.getBinStart(override),
                 _end: getBinEnd(override)
             });
 
@@ -493,7 +493,7 @@ module.exports = class Histogram extends BaseWidget {
                 _query: _query,
                 _column: _column,
                 _aggregation: _aggregation,
-                _start: getBinStart(override),
+                _start: this.getBinStart(override),
                 _end: getBinEnd(override),
                 _offset: parseOffset(_offset, _aggregation)
             });
@@ -585,7 +585,7 @@ module.exports = class Histogram extends BaseWidget {
 
         var binsCount = getBinsCount(override);
         var width = getWidth(override);
-        var binsStart = getBinStart(override);
+        var binsStart = this.getBinStart(override);
         var nulls = 0;
         var infinities = 0;
         var nans = 0;
@@ -603,7 +603,7 @@ module.exports = class Histogram extends BaseWidget {
             timestampStart = firstRow.timestamp_start;
             infinities = firstRow.infinities_count;
             nans = firstRow.nans_count;
-            binsStart = populateBinStart(override, firstRow);
+            binsStart = this.populateBinStart(override, firstRow);
 
             if (Number.isFinite(timestampStart)) {
                 aggregation = this.getAggregation(override);
@@ -665,6 +665,27 @@ module.exports = class Histogram extends BaseWidget {
 
         return 0;
     }
+
+    getBinStart (override) {
+        if (override.hasOwnProperty('start') && override.hasOwnProperty('end')) {
+            return Math.min(override.start, override.end);
+        }
+        return override.start || 0;
+    }
+
+    populateBinStart (override, firstRow) {
+        var binStart;
+
+        if (firstRow.hasOwnProperty('timestamp')) {
+            binStart = firstRow.timestamp;
+        } else if (override.hasOwnProperty('start')) {
+            binStart = this.getBinStart(override);
+        } else {
+            binStart = firstRow.min;
+        }
+
+        return binStart;
+    }
 };
 
 var DATE_AGGREGATIONS = {
@@ -678,13 +699,6 @@ var DATE_AGGREGATIONS = {
     'year': true
 };
 
-function getBinStart(override) {
-    if (override.hasOwnProperty('start') && override.hasOwnProperty('end')) {
-        return Math.min(override.start, override.end);
-    }
-    return override.start || 0;
-}
-
 function getBinEnd(override) {
     if (override.hasOwnProperty('start') && override.hasOwnProperty('end')) {
         return Math.max(override.start, override.end);
@@ -719,16 +733,3 @@ function parseOffset(offset, aggregation) {
     return '' + offsetInHours;
 }
 
-function populateBinStart(override, firstRow) {
-    var binStart;
-
-    if (firstRow.hasOwnProperty('timestamp')) {
-        binStart = firstRow.timestamp;
-    } else if (override.hasOwnProperty('start')) {
-        binStart = getBinStart(override);
-    } else {
-        binStart = firstRow.min;
-    }
-
-    return binStart;
-}