From 960847fee9f1cbe755bb8c24b7fa1a5bb080d90e Mon Sep 17 00:00:00 2001
From: Ross <xkjq@ymail.com>
Date: Sat, 11 Dec 2021 13:05:17 +0000
Subject: [PATCH] .

---
 physics/views.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/physics/views.py b/physics/views.py
index 57353e35..e5264164 100644
--- a/physics/views.py
+++ b/physics/views.py
@@ -322,7 +322,7 @@ def exam_take(request, pk, sk, cid, passcode=None):
     if not exam.active:
         raise Http404("Exam not found")
 
-    if exam.valid_users is not None:
+    if exam.valid_users.exists():
         user = exam.valid_users.filter(cid=cid)
 
         if not user or user.passcode != passcode: