diff --git a/README.html b/README.html
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--- a/README.html
+++ b/README.html
@@ -113,6 +113,7 @@
     <ul>
         <li><code>&lt;debug level&gt;</code> determines the log verbosity (1, 2, 3 or 0 to disable)</li>
         <li><code>--noldap</code> disables id mapping and uses a default uid=666 and gid=777</li>
+        <li><code>--uid, --gid</code> changes the default uid/gid when no mapping is available (must be nonzero)</li>
     </ul></li>
 </ol>
 <h2>5. <a name="mount">Mounting</a></h2>