diff --git a/public/js/ff/charts.js b/public/js/ff/charts.js
index 52ce69aba2..cfc787fae6 100644
--- a/public/js/ff/charts.js
+++ b/public/js/ff/charts.js
@@ -204,7 +204,8 @@ function stackedColumnChart(URI, container) {
     "use strict";
 
     var colorData = true;
-    var options = defaultChartOptions;
+    var options = $.extend(true, {}, defaultChartOptions);
+
     options.stacked = true;
     options.scales.xAxes[0].stacked = true;
     options.scales.yAxes[0].stacked = true;