diff --git a/docs/ref/request-response.txt b/docs/ref/request-response.txt
index fbc83bc..11344b6 100644
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All attributes should be considered read-only, unless stated otherwise below.
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153 | 153 | header called ``X-Bender`` would be mapped to the ``META`` key |
154 | 154 | ``HTTP_X_BENDER``. |
155 | 155 | |
| 156 | Django's :djadmin:`runserver` strips all headers with underscores in the |
| 157 | name, so you won't see them in ``META``. This prevents header-spoofing |
| 158 | based on ambiguity between underscores and dashes both being normalizing to |
| 159 | underscores in WSGI environment variables. It matches the behavior of |
| 160 | Web servers like Nginx and Apache 2.4+. |
| 161 | |
156 | 162 | .. attribute:: HttpRequest.user |
157 | 163 | |
158 | 164 | An object of type :setting:`AUTH_USER_MODEL` representing the currently |