diff --git a/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java b/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
index 004a50a..3ff44f4 100644
--- a/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
+++ b/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
@@ -446,7 +446,7 @@
                     //notificationを作成
                     Notification notification = new Notification(groups.get(i).getRequestList().getRequests().get(j),groups.get(i),null);
                     //指定したkey(業番)を持っているHashMapがなければ作成する。
-                    if(codeToNotification.get(groups.get(i).getRequestList().getRequests().get(j))==null){
+                    if(codeToNotification.get(groups.get(i).getRequestList().getRequests().get(j).getLocation())==null){
                         notifications.add(notification);
                         codeToNotification.put(groups.get(i).getRequestList().getRequests().get(j).getLocation(),notifications);
                     }else{