diff --git a/website/client-old/js/services/taskServices.js b/website/client-old/js/services/taskServices.js
index 2c4a272d1a..3bb2abaeb1 100644
--- a/website/client-old/js/services/taskServices.js
+++ b/website/client-old/js/services/taskServices.js
@@ -409,8 +409,8 @@ angular.module('habitrpg')
 
       var dateFormat = 'MM-DD-YYYY';
       if (user.preferences.dateFormat) dateFormat = user.preferences.dateFormat.toUpperCase();
-
-      var nextDue = nextDueDates.map(function (date) {
+      var nextDueDatesArr = angular.isArray(nextDueDates) ? nextDueDates : [];
+      var nextDue = nextDueDatesArr.map(function (date) {
         return date.format(dateFormat);
       });