diff --git a/modules/calendar.js b/modules/calendar.js
index fd985ca79da3801b38b2dcacfba8d294517ceee7..b9428c0337bb160d5f6fda3230537cba708ea3cd 100644
--- a/modules/calendar.js
+++ b/modules/calendar.js
@@ -75,7 +75,7 @@ function getData(count, cb) {
                 ev.startRendered = pad(start.getHours(),2)+':'+pad(start.getMinutes(),2);
             } else {
                 ev.startRendered = DOW[start.getDay()]+', '+pad(start.getDate(),2)
-                    +'.'+pad(start.getMonth(),2)+'. '+pad(start.getHours(),2)
+                    +'.'+pad(start.getMonth()+1,2)+'. '+pad(start.getHours(),2)
                     +':'+pad(start.getMinutes(),2);
             }
             var end = new Date(ev.end*1000);