diff --git a/apps/vm/views.py b/apps/vm/views.py
index 3f0b4d85..c2440ae4 100644
--- a/apps/vm/views.py
+++ b/apps/vm/views.py
@@ -102,7 +102,7 @@ class VisitorViewSet(CustomModelViewSet):
         check_phone_code(phone, code)
         # 查询是否已注册
         user = User.objects.filter(phone=phone).first()
-        ep = Employee.objects.get_queryset(all=True).filter(phone=phone, user=None).first()
+        ep = Employee.objects.get_queryset(all=True).filter(phone=phone, user__isnull=True).first()
         if user or ep:
             raise ParseError('该手机号已注册,请直接登录')
         # 访客/司机账户创建