diff --git a/xep-0410.xml b/xep-0410.xml
index f2e05a9b..bcaeb00f 100644
--- a/xep-0410.xml
+++ b/xep-0410.xml
@@ -140,7 +140,7 @@
     <example caption="Server Response to a Non-Occupant"><![CDATA[
 <iq from='characters@chat.shakespeare.lit/JuliC' id='s2c1' type='error'
       to='juliet@capulet.lit/client' >
-  <error type="cancel">
+  <error type="cancel" by="characters@chat.shakespeare.lit">
     <not-acceptable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas" />
   </error>
 </iq>