diff --git a/flask-app/instance/conf/testing/mesh.ttl b/flask-app/instance/conf/testing/mesh.ttl
index 2bef501..8284213 100644
--- a/flask-app/instance/conf/testing/mesh.ttl
+++ b/flask-app/instance/conf/testing/mesh.ttl
@@ -67,6 +67,7 @@ text:TextIndexES    rdfs:subClassOf   text:TextIndex .
                meshv:identifier 
                meshv:prefLabel
                meshv:altLabel
+               meshv:casn1_label
                  mesht:identifier 
                  mesht:prefLabel
                  mesht:altLabel