diff --git a/src/Tree/Controllers/TreeController.cs b/src/Tree/Controllers/TreeController.cs
index 54df26b7bc6d69c4b3679eba6c9fc951050b6c3f..4b18deecc4af9388277236de61423a8187be8d92 100644
--- a/src/Tree/Controllers/TreeController.cs
+++ b/src/Tree/Controllers/TreeController.cs
@@ -343,13 +343,6 @@ namespace Coscine.Api.Tree.Controllers
                     BaseUri = graphNameUri
                 };
                 StringParser.Parse(tempGraph, metadataObject.Value<string>("metadata"), MimeTypesHelper.GetParser(mimeType));
-                var triplesList = tempGraph.Triples.ToArray();
-                var subjectNode = tempGraph.CreateUriNode(graphNameUri);
-                foreach (var triple in triplesList)
-                {
-                    tempGraph.Retract(triple);
-                    tempGraph.Assert(new Triple(subjectNode, triple.Predicate, triple.Object));
-                }
                 json = JObject.Parse(VDS.RDF.Writing.StringWriter.Write(tempGraph, MimeTypesHelper.GetWriter("application/rdf+json")));
             }