diff --git a/doc/arm/Bv9ARM.ch06.html b/doc/arm/Bv9ARM.ch06.html
index 6c320e7a69..f60349f16b 100644
--- a/doc/arm/Bv9ARM.ch06.html
+++ b/doc/arm/Bv9ARM.ch06.html
@@ -2324,7 +2324,7 @@ badresp:1,adberr:0,findfail:0,valfail:0]
     [<span class="optional"> recursion <em class="replaceable"><code>yes_or_no</code></em>; </span>]
     [<span class="optional"> send-cookie <em class="replaceable"><code>yes_or_no</code></em>; </span>]
     [<span class="optional"> require-server-cookie <em class="replaceable"><code>yes_or_no</code></em>; </span>]
-    [<span class="optional"> cookie-algorithm <em class="replaceable"><code>secret_string</code></em>; </span>]
+    [<span class="optional"> cookie-algorithm <em class="replaceable"><code>algorithm_id</code></em>; </span>]
     [<span class="optional"> cookie-secret <em class="replaceable"><code>secret_string</code></em>; </span>]
     [<span class="optional"> nocookie-udp-size <em class="replaceable"><code>number</code></em> ; </span>]
     [<span class="optional"> request-nsid <em class="replaceable"><code>yes_or_no</code></em>; </span>]