diff --git a/tests/base.py b/tests/base.py
index d1cd8cd..5618316 100644
--- a/tests/base.py
+++ b/tests/base.py
@@ -195,11 +195,3 @@ class AxesTestCase(TestCase):
         self.cool_off()
         self.check_login()
         self.check_logout()
-
-
-class CustomTestUserModel(AbstractBaseUser):
-    class Meta:
-        app_label = "tests"
-        db_table = "auth_user"
-    USERNAME_FIELD = "email"
-    
\ No newline at end of file
diff --git a/tests/test_login.py b/tests/test_login.py
index 4b17433..80b602f 100644
--- a/tests/test_login.py
+++ b/tests/test_login.py
@@ -15,7 +15,7 @@ from django.urls import reverse
 from axes.conf import settings
 from axes.helpers import get_cache, make_cache_key_list, get_cool_off, get_failure_limit
 from axes.models import AccessAttempt
-from tests.base import AxesTestCase, CustomTestUserModel
+from tests.base import AxesTestCase
 
 
 class DjangoLoginTestCase(TestCase):
@@ -145,17 +145,6 @@ class DatabaseLoginTestCase(AxesTestCase):
             response, self.LOGIN_FORM_KEY, status_code=self.ALLOWED, html=True
         )
 
-    @override_settings(AUTH_USER_MODEL='tests.CustomTestUserModel')
-    def test_custom_user_model_login(self):
-        """
-        Test a valid login for a custom username field on a custom user model.
-        """
-
-        response = self._login(self.email, self.password)
-        self.assertNotContains(
-            response, self.LOGIN_FORM_KEY, status_code=self.ALLOWED, html=True
-        )
-
     def test_lockout_limit_once(self):
         """
         Test the login lock trying to login one more time than failure limit.