diff --git a/xep-0198.xml b/xep-0198.xml
index 97151840..ff172efe 100644
--- a/xep-0198.xml
+++ b/xep-0198.xml
@@ -520,6 +520,9 @@ S: <t stanzas='10'/>
     </xs:documentation>
   </xs:annotation>
 
+  <xs:import namespace='urn:ietf:params:xml:ns:xmpp-stanzas'
+             schemaLocation='http://xmpp.org/schemas/stanzaerror.xsd'/>
+
   <xs:element name='a'>
     <xs:complexType>
       <xs:simpleContent>