diff --git a/app/assets/javascripts/graphs/bar_group.js b/app/assets/javascripts/graphs/bar_group.js
index 46262957e..2a40dbbf0 100644
--- a/app/assets/javascripts/graphs/bar_group.js
+++ b/app/assets/javascripts/graphs/bar_group.js
@@ -3,12 +3,12 @@
 
 var growstuff = (window.growstuff = window.growstuff || {});
 
-function BarGroup(bars) {
-  this._bars = bars;
+function BarGroup(data) {
+  this._data = data
 }
 
 BarGroup.prototype.render = function(d3){
-  var bars = this._bars;
+  var bars = this._data.bars;
   return d3.append('g')
     .attr("class", "bar")
     .selectAll("rect")
diff --git a/app/assets/javascripts/graphs/horizontal_bar_graph.js b/app/assets/javascripts/graphs/horizontal_bar_graph.js
index 9357b0357..32f99ea2f 100644
--- a/app/assets/javascripts/graphs/horizontal_bar_graph.js
+++ b/app/assets/javascripts/graphs/horizontal_bar_graph.js
@@ -18,7 +18,7 @@
     var width = this._data.width;
     var height = this._data.height;
     var margin = this._data.margin;
-    var barGroup = new BarGroup(bars);
+    var barGroup = new BarGroup(this._data);
     var barLabelGroup = new BarLabelGroup(this._data);
     var margin = this._data.margin;
     var svg = d3
diff --git a/spec/javascripts/graphs/bar_group_spec.js b/spec/javascripts/graphs/bar_group_spec.js
index 24d19d7e9..6e0cf6058 100644
--- a/spec/javascripts/graphs/bar_group_spec.js
+++ b/spec/javascripts/graphs/bar_group_spec.js
@@ -11,7 +11,10 @@
       {name: 'Shade', value: 0.2},
       {name: 'Half Shade', value: 0.5}
     ];
-    subject = new BarGroup(bars);
+    var data = {
+      bars:bars
+    };
+    subject = new BarGroup(data);
     subject.render(d3.select('#jasmine_content').append('svg'));
   })