diff --git a/app.js b/app.js
index d63edbb..affdaf6 100644
--- a/app.js
+++ b/app.js
@@ -12,7 +12,7 @@ d3DemoApp.controller('AppCtrl', function AppCtrl ($scope, $http) {
 
   // helper for formatting date
   var humanReadableDate = function (d) {
-    return d.getUTCMonth() + '/' + d.getUTCDate();
+    return d.getUTCMonth()+1 + '/' + d.getUTCDate();
   };
 
   // helper for reformatting the Github API response into a form we can pass to D3
@@ -303,4 +303,4 @@ d3DemoApp.directive('ghVisualization', function () {
       });
     }
   }
-});
\ No newline at end of file
+});