diff --git a/lib/core.js b/lib/core.js
index fa9b7c2..e7a4f4d 100644
--- a/lib/core.js
+++ b/lib/core.js
@@ -142,8 +142,10 @@ var updatePoints = function(nextProps, chart, dataKey) {
 
 var addData = function(nextProps, chart, setIndex, pointIndex) {
     var values = [];
+    var labels = [];
     nextProps.data.datasets.forEach(function(set) {
         values.push(set.data[pointIndex]);
+        labels.push(set.data[pointIndex]);
     });
-    chart.addData(values, nextProps.data.labels[setIndex]);
+    chart.addData(values, labels);
 };