diff --git a/django/middleware/common.py b/django/middleware/common.py
index 9fbbdba63a..b2c97c6740 100644
--- a/django/middleware/common.py
+++ b/django/middleware/common.py
@@ -34,8 +34,6 @@ class CommonMiddleware(object):
         settings.APPEND_SLASH and settings.PREPEND_WWW
         """
 
-        assert False, 1
-
         # Check for denied User-Agents
         if 'HTTP_USER_AGENT' in request.META:
             for user_agent_regex in settings.DISALLOWED_USER_AGENTS: