diff --git a/eu-regulation-2019-947.owl b/eu-regulation-2019-947.owl
index fd1deff..78437a6 100644
--- a/eu-regulation-2019-947.owl
+++ b/eu-regulation-2019-947.owl
@@ -1,4 +1,4 @@
-@prefix : <http://www.hsu-ifa.de/ontologies/EU_2019-947#> .
+@prefix : <http://w3id.org/hsu-aut/eu-regulation2019-947#> .
 @prefix owl: <http://www.w3.org/2002/07/owl#> .
 @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
 @prefix xml: <http://www.w3.org/XML/1998/namespace> .