diff --git a/xep-0116.xml b/xep-0116.xml
index ca5ac416..d2c08f82 100644
--- a/xep-0116.xml
+++ b/xep-0116.xml
@@ -753,7 +753,7 @@
   </section1>
 
 <section1 topic='Implementation Notes' anchor='implement'>
-  <section2 topic='Multiple-Precision Integers' anchor='sign-normal'>
+  <section2 topic='Multiple-Precision Integers' anchor='sign-bigint'>
     <p>Before Base-64 encoding, hashing or HMACing an arbitrary-length integer, the integer MUST first be converted to a "big endian" bitstring. The bitstring MUST then be padded with leading zero bits so that there are an integral number of octets. Finally, if the integer is not of fixed bit-length (i.e. not a hash or HMAC result) and the bitstring contains leading octets that are zero, these MUST be removed (so the high-order octet is non-zero).</p>
   </section2>
 
@@ -769,6 +769,7 @@
       <li>Ensure there are no character references</li>
       <li>Convert empty elements to start-end tag pairs</li>
       <li>Ensure there is no whitespace except for single spaces before attributes</li>
+      <li>Ensure there are no "xmlns" attributes or namespace prefixes.</li>
     </ul>
   </section2>
 </section1>