diff --git a/src/main/java/org/ntlab/citrusserver/repositories/ScheduleManager.java b/src/main/java/org/ntlab/citrusserver/repositories/ScheduleManager.java
index 6b99f95..31b4055 100644
--- a/src/main/java/org/ntlab/citrusserver/repositories/ScheduleManager.java
+++ b/src/main/java/org/ntlab/citrusserver/repositories/ScheduleManager.java
@@ -93,6 +93,6 @@
     }
 
     public void setSchedulesBookId(String accountId, int year, int month, int day, int scheduleId, int newBookId){
-        schedules.get(accountId).get(year).get(month).get(day).get(scheduleId).setScheduleId(newBookId);
+        schedules.get(accountId).get(year).get(month).get(day).get(scheduleId).setBookId(newBookId);
     }
 }