diff --git a/src/core/core.datasetController.js b/src/core/core.datasetController.js
index a6e889d3e..70fdefe53 100644
--- a/src/core/core.datasetController.js
+++ b/src/core/core.datasetController.js
@@ -129,22 +129,6 @@ function getStackKey(xScale, yScale, meta) {
 	return isStacked(yScale, meta) && xScale.id + '.' + yScale.id + '.' + meta.stack + '.' + meta.type;
 }
 
-function arraysEqual(array1, array2) {
-	var ilen = array1.length;
-	var i;
-
-	if (ilen !== array2.length) {
-		return false;
-	}
-
-	for (i = 0; i < ilen; i++) {
-		if (array1[i] !== array2[i]) {
-			return false;
-		}
-	}
-	return true;
-}
-
 function getFirstScaleId(chart, axis) {
 	var scalesOpts = chart.options.scales;
 	var scale = chart.options.scale;
@@ -320,7 +304,7 @@ helpers.extend(DatasetController.prototype, {
 			me._data = convertObjectDataToArray(data);
 			me._objectData = data;
 		} else {
-			if (me._data === data && arraysEqual(data, me._dataCopy)) {
+			if (me._data === data && helpers.arrayEquals(data, me._dataCopy)) {
 				return false;
 			}