diff --git a/DMO-core-SWI.ttl b/DMO-core-SWI.ttl
index 67ab7e3b0c32940e62b549f9d209de831ef13b8b..cd29caf843984a585e1da507fd28781859ee2730 100644
--- a/DMO-core-SWI.ttl
+++ b/DMO-core-SWI.ttl
@@ -28,7 +28,7 @@
                           rdfs:label "SWI Dataset Metadata Ontology (DMO-C-SWI)" ;
                           owl:versionInfo "1.0.0" .
 
- #      <http://purl.org/vocab/vann/preferredNamespaceUri> "https://w3id.org/dmo" ;
+#      <http://purl.org/vocab/vann/preferredNamespaceUri> "https://w3id.org/dmo" ;
  
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 #    Individuals