diff --git a/schema/lib/types/vaultpass.xsd b/schema/lib/types/vaultpass.xsd
index fd2a4c0..1f85b6f 100644
--- a/schema/lib/types/vaultpass.xsd
+++ b/schema/lib/types/vaultpass.xsd
@@ -81,12 +81,16 @@
             -->
             <xs:element name="token">
                 <xs:complexType>
-                    <xs:attribute name="source" type="t_vaultpass_tokensource" use="optional"/>
+                    <xs:simpleContent>
+                        <xs:extension base="xs:token">
+                            <xs:attribute name="source" type="t_vaultpass_tokensource" use="optional"/>
+                        </xs:extension>
+                    </xs:simpleContent>
                 </xs:complexType>
             </xs:element>
         </xs:choice>
     </xs:complexType>
-    
+
     <xs:simpleType name="t_vaultpass_tokensource">
         <xs:union memberTypes="t_std_envvar t_unix_filepath xs:token"/>
     </xs:simpleType>