foo.diff

diff --git a/tests/auth_tests/urls_custom_user_admin.py b/tests/auth_tests/urls_custom_user_admin.py
index 552ccf0..f719837 100644
--- a/tests/auth_tests/urls_custom_user_admin.py
+++ b/tests/auth_tests/urls_custom_user_admin.py
@@ -6,7 +6,12 @@ from django.contrib.auth.urls import urlpatterns
 
 
 site = admin.AdminSite(name='custom_user_admin')
-site.register(get_user_model(), UserAdmin)
+
+class CustomUseradmin(UserAdmin):
+    def log_change(self, request, object, message):
+        pass
+
+site.register(get_user_model(), CustomUseradmin)
 
 urlpatterns += [
     url(r'^admin/', include(site.urls)),