diff --git a/xep-0130.xml b/xep-0130.xml
index db5fbc23..1a903fdc 100644
--- a/xep-0130.xml
+++ b/xep-0130.xml
@@ -1024,7 +1024,7 @@
       <xs:simpleContent>
         <xs:extension base='xs:string'>
           <xs:attribute name='scheme'
-                        type='xs:NCNAME'
+                        type='xs:NCName'
                         use='required'/>
         </xs:extension>
       </xs:simpleContent>