foo.diff

diff --git a/app_admin/client/lib/holidays.js b/app_admin/client/lib/holidays.js
index adae7bfcb..7b586e084 100644
--- a/app_admin/client/lib/holidays.js
+++ b/app_admin/client/lib/holidays.js
@@ -111,8 +111,10 @@ export const isMidweekHoliday = () => {
       isHoliday = true;
     }
     /* adds 1 day padding to midweek holidays so day before holiday also
-    triggers holiday delay messaging. */
-    if (holiday.subtract(1, 'days').format('LLLL') === today.format('LLLL')) {
+     * triggers holiday delay messaging.
+     */
+    const dayBeforeHoliday = holiday.clone().subtract(1, 'days');
+    if (dayBeforeHoliday.format('LLLL') === today.format('LLLL')) {
       isHoliday = true;
     }
   });