diff --git a/backend/src/chicken_master/time.clj b/backend/src/chicken_master/time.clj
index e9be8fc..cb85c61 100644
--- a/backend/src/chicken_master/time.clj
+++ b/backend/src/chicken_master/time.clj
@@ -111,7 +111,7 @@
     (.toString rule)))
 
 (defn get-until [rule]
-  (some-> rule (RecurrenceRule.) (.getUntil) (.getTimestamp) (Instant/ofEpochMilli)))
+  (some-> rule (RecurrenceRule.) (.getUntil) (.getTimestamp) (Instant/ofEpochMilli) str))
 (defn set-until [rule until]
   (let [rule (RecurrenceRule. rule)]
     (.setUntil rule (to-recur-datetime until))