diff --git a/core/models.py b/core/models.py
index 6157d28..50fbd7d 100644
--- a/core/models.py
+++ b/core/models.py
@@ -34,7 +34,7 @@ class MyUser(AbstractBaseUser, PermissionsMixin):
     is_active = models.BooleanField(_('active'), default=True)
     
     objects = MyUserManager()
-
+    USERNAME_FIELD = 'username'
     REQUIRED_FIELDS = []
 
     def __str__(self):