diff --git a/target/schematron/PEPPOLBIS-T120.sch b/target/schematron/PEPPOLBIS-T120.sch
index f1a3551b..2e12373c 100644
--- a/target/schematron/PEPPOLBIS-T120.sch
+++ b/target/schematron/PEPPOLBIS-T120.sch
@@ -1818,7 +1818,7 @@
 
 	     <rule context="cac:DespatchLine/cac:Item/cac:CommodityClassification">
 		       <assert id="PEPPOL-T120-R040"
-                 test="((normalize-space(cbc:ItemClassificationCode/listID) = 'ZZZ') and (cbc:ItemClassificationCode/name)) or (normalize-space(cbc:ItemClassificationCode/listID) != 'ZZZ') or not (cbc:ItemClassificationCode)"
+                 test="((normalize-space(cbc:ItemClassificationCode/@listID) = 'ZZZ') and (cbc:ItemClassificationCode/name)) or (normalize-space(cbc:ItemClassificationCode/@listID) != 'ZZZ') or not (cbc:ItemClassificationCode)"
                  flag="warning">A name must be provided if the listID is "ZZZ".</assert>
 	     </rule>