diff --git a/calendar/base/content/calendar-recurrence-dialog.js b/calendar/base/content/calendar-recurrence-dialog.js
index e05472644dc..4d6ec8e6320 100644
--- a/calendar/base/content/calendar-recurrence-dialog.js
+++ b/calendar/base/content/calendar-recurrence-dialog.js
@@ -189,7 +189,7 @@ function loadDialog()
                     setElementValue("repeat-ntimes-count", rule.count );
                 }
             } else {
-                var endDate = rule.endDate;
+                var endDate = rule.endDate.getInTimezone("UTC");
                 if (!endDate) {
                     setElementValue("recurrence-duration", "forever");
                 } else {