diff --git a/roles/attribute-aggregation-server/templates/attributeAuthorities.yml.j2 b/roles/attribute-aggregation-server/templates/attributeAuthorities.yml.j2
index 799fcd208..e98342b8b 100644
--- a/roles/attribute-aggregation-server/templates/attributeAuthorities.yml.j2
+++ b/roles/attribute-aggregation-server/templates/attributeAuthorities.yml.j2
@@ -88,7 +88,7 @@ authorities:
         name: "urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified"
         }
       ],
-      validationRegExp: "^urn:.*$"
+      validationRegExp: "^urn:(collab:group|mace:surf.nl):.*$"
     }
   - {
       id: "manage",