diff --git a/readthedocs/settings/base.py b/readthedocs/settings/base.py
index cfa620376e2..6d4696f73c6 100644
--- a/readthedocs/settings/base.py
+++ b/readthedocs/settings/base.py
@@ -390,6 +390,9 @@ def USE_PROMOS(self):  # noqa
                 'filename': os.path.join(LOGS_ROOT, 'debug.log'),
                 'formatter': 'default',
             },
+            'null': {
+                'class': 'logging.NullHandler',
+            },
         },
         'loggers': {
             '': {  # root logger
@@ -403,5 +406,9 @@ def USE_PROMOS(self):  # noqa
                 # Don't double log at the root logger for these.
                 'propagate': False,
             },
+            'django.security.DisallowedHost': {
+                'handlers': ['null'],
+                'propagate': False,
+            },
         },
     }