diff --git a/src/directives/mwlCalendarMonth.js b/src/directives/mwlCalendarMonth.js
index f05c1ed2..4c0703ab 100644
--- a/src/directives/mwlCalendarMonth.js
+++ b/src/directives/mwlCalendarMonth.js
@@ -77,7 +77,8 @@ angular
 
       var newStart = moment(event.startsAt)
         .date(moment(newDayDate).date())
-        .month(moment(newDayDate).month());
+        .month(moment(newDayDate).month())
+        .year(moment(newDayDate).year());
 
       var newEnd = calendarHelper.adjustEndDateFromStartDiff(event.startsAt, newStart, event.endsAt);
 
diff --git a/src/directives/mwlCalendarYear.js b/src/directives/mwlCalendarYear.js
index fd805fda..bec7d1a8 100644
--- a/src/directives/mwlCalendarYear.js
+++ b/src/directives/mwlCalendarYear.js
@@ -51,7 +51,9 @@ angular
     };
 
     vm.handleEventDrop = function(event, newMonthDate) {
-      var newStart = moment(event.startsAt).month(moment(newMonthDate).month());
+      var newStart = moment(event.startsAt)
+        .month(moment(newMonthDate).month())
+        .year(moment(newMonthDate).year());
       var newEnd = calendarHelper.adjustEndDateFromStartDiff(event.startsAt, newStart, event.endsAt);
 
       vm.onEventTimesChanged({