diff --git a/src/main/java/com/example/backend/notification/controller/NotificationController.java b/src/main/java/com/example/backend/notification/controller/NotificationController.java
index 9a2fa75..25fc7f4 100644
--- a/src/main/java/com/example/backend/notification/controller/NotificationController.java
+++ b/src/main/java/com/example/backend/notification/controller/NotificationController.java
@@ -60,10 +60,6 @@ public ResponseEntity<String> deleteNotification() {
                 .body(notificationService.deleteNotification(LoadUser.getEmail()));
     }
 
-    @CrossOrigin(value = { "*" },
-            allowedHeaders = { "*" },
-            maxAge = 900
-    )
     @GetMapping("/subscribe/{id}")
     public SseEmitter subscribe(@RequestHeader(value = "Last-Event-ID", required = false, defaultValue = "") String lastEventId,
                                 @PathVariable Long id ) {
diff --git a/src/main/java/com/example/backend/notification/service/EmitterService.java b/src/main/java/com/example/backend/notification/service/EmitterService.java
index e092c65..2e754ba 100644
--- a/src/main/java/com/example/backend/notification/service/EmitterService.java
+++ b/src/main/java/com/example/backend/notification/service/EmitterService.java
@@ -10,7 +10,7 @@
 public class EmitterService {
 
     private final EmitterRepository emitterRepository;
-    private static final Long DEFAULT_TIMEOUT = 60L * 1000 * 60;
+    private static final Long DEFAULT_TIMEOUT = 60L * 1000 * 60 * 24;
 
     public SseEmitter createEmitter(Long id) {
         SseEmitter emitter = new SseEmitter(DEFAULT_TIMEOUT);