diff --git a/js/chart.js b/js/chart.js
index d1f6763bc6..51a5baf9b0 100644
--- a/js/chart.js
+++ b/js/chart.js
@@ -369,6 +369,7 @@ JQPlotSplineChart.prototype.populateOptions = function (dataTable, options) {
  */
 var JQPlotScatterChart = function (elementId) {
     JQPlotLineChart.call(this, elementId);
+    this.validator = ScatterChart.prototype;
 };
 JQPlotScatterChart.prototype = new JQPlotLineChart();
 JQPlotScatterChart.prototype.constructor = JQPlotScatterChart;
@@ -438,7 +439,7 @@ var JQPlotTimelineChart = function (elementId) {
     this.validator = TimelineChart.prototype;
 };
 JQPlotTimelineChart.prototype = new JQPlotLineChart();
-JQPlotTimelineChart.prototype.constructor = JQPlotAreaChart;
+JQPlotTimelineChart.prototype.constructor = JQPlotTimelineChart;
 
 JQPlotTimelineChart.prototype.populateOptions = function (dataTable, options) {
     var optional = {