diff --git a/utils/data-plotter/LeapDataPlotter.js b/utils/data-plotter/LeapDataPlotter.js
index <HASH>..<HASH> 100644
--- a/utils/data-plotter/LeapDataPlotter.js
+++ b/utils/data-plotter/LeapDataPlotter.js
@@ -85,6 +85,8 @@
   LeapDataPlotter.prototype.plot = function (id, data, opts) {
     console.assert(data, "No plotting data received");
 
+    opts || (opts = {});
+
     if (data.length) {
 
       for (var i = 0, c = 120; i < data.length; i++, c=++c>122?97:c) {
Fix issue where not giving options to #plot would crash