diff --git a/examples/omwg/transf.rdf b/examples/omwg/transf.rdf
index 7955469ea7f4f57c5d6ec54b4b12349ccc0dc543..17e5d986648dcd25ef2d792d85aa8234d7783aff 100644
--- a/examples/omwg/transf.rdf
+++ b/examples/omwg/transf.rdf
@@ -168,7 +168,7 @@ it only illustrates transformations
     <!-- OK -->
     <align:map>
       <align:Cell rdf:about="#M4">
-        <align:entity1><Class rdf:about="me:PhysicalComponent" /></align:entity1>
+        <align:entity1><Class rdf:about="&me;PhysicalComponent" /></align:entity1>
         <align:entity2><Class rdf:about="&im;MechatronicComponent" /></align:entity2>
         <align:relation>&lt;</align:relation>
         <align:measure rdf:datatype="&xsd;float">1.0</align:measure>