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 d222537..827253d 100644
--- a/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
+++ b/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
@@ -574,8 +574,9 @@
             for (int j = 0; j < groups.get(i).getRequestList().getRequests().size(); j++) {
                 //codeToNotificationに格納するArrayList<Notification>を初期化
                 ArrayList<Notification> notifications = new ArrayList<>();
+                Date deadline = groups.get(i).getRequestList().getRequests().get(j).getDeadline();
                 //期限内かつ未達成のrequestのみ取得
-                if (groups.get(i).getRequestList().getRequests().get(j).getDeadline().after(nowDate) && groups.get(i).getRequestList().getRequests().get(j).isDone() == false) {
+                if (( deadline == null || deadline.after(nowDate))&& groups.get(i).getRequestList().getRequests().get(j).isDone() == false) {
                     //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。