diff --git a/static/js/graphing.js b/static/js/graphing.js
index 834b2d363..4ee2ef2f6 100644
--- a/static/js/graphing.js
+++ b/static/js/graphing.js
@@ -1419,8 +1419,9 @@ LogUsageChart.prototype.handleElementClicked_ = function(e) {
   var disabled = [];
 
   var enabledCount = 0;
+  var d = this.chart_.multibar.disabled();
   for (var i = 0; i < this.data_.length; ++i) {
-    enabledCount += (this.chart_.multibar.disabled()[i] ? 0 : 1);
+    enabledCount += (d[i] ? 0 : 1);
   }
 
   for (var i = 0; i < this.data_.length; ++i) {