<ol>
<li>Caching must be enabled for this URL. See the <code class="directive"><a href="./mod/mod_cache.html#cacheenable">CacheEnable</a></code> and <code class="directive"><a href="./mod/mod_cache.html#cachedisable">CacheDisable</a></code> directives.</li>
- <li>The response must have a HTTP status code of 200, 203, 300, 301 or
- 410.</li>
+ <li>If the response has an HTTP status code other than 200, 203, 300,
+ 301 or 410 it must also specify an "Expires" or "Cache-Control" header.
+ </li>
<li>The request must be a HTTP GET request.</li>