diff --git a/src/main/java/com/waruru/areyouhere/attendance/controller/AttendanceController.java b/src/main/java/com/waruru/areyouhere/attendance/controller/AttendanceController.java
index e22a10b..4a1cc3d 100644
--- a/src/main/java/com/waruru/areyouhere/attendance/controller/AttendanceController.java
+++ b/src/main/java/com/waruru/areyouhere/attendance/controller/AttendanceController.java
@@ -132,6 +132,8 @@ private HttpCookie getAuthCodeCookie(String authCode){
     }
 
     private void checkAuthCodeCookie(Cookie[] cookies, String authCode){
+        if(cookies == null)
+            return;
         Optional<Cookie> authCookie = Arrays.stream(cookies)
                 .filter(cookie -> cookie.getName().equals(encodeCookieKey(authCode)))
                 .findFirst();