diff --git a/cppquiz/settings.py b/cppquiz/settings.py
index 20a4245..675eabc 100644
--- a/cppquiz/settings.py
+++ b/cppquiz/settings.py
@@ -158,8 +158,15 @@
             'filename': here('quiz.log'),
             'formatter': 'simple_stamped',
         },
+        'null': {
+            'class': 'logging.NullHandler',
+        },
     },
     'loggers': {
+        'django.security.DisallowedHost': {
+            'handlers': ['null'],
+            'propagate': False,
+        },
         'django.request': {
             'handlers': ['mail_admins'],
             'level': 'ERROR',