diff --git a/src/main/kotlin/no/fdk/dataset_catalog/rdf/RDFDatasetUtils.kt b/src/main/kotlin/no/fdk/dataset_catalog/rdf/RDFDatasetUtils.kt
index 46020e5..f61ce01 100644
--- a/src/main/kotlin/no/fdk/dataset_catalog/rdf/RDFDatasetUtils.kt
+++ b/src/main/kotlin/no/fdk/dataset_catalog/rdf/RDFDatasetUtils.kt
@@ -20,8 +20,8 @@ fun Model.addDatasetResource(dataset: Dataset, seriesData: SeriesData): Resource
     if (dataset.specializedType == SpecializedType.SERIES) {
         datasetResource
             .addProperty(RDF.type, ResourceFactory.createProperty("${DCAT.getURI()}DatasetSeries"))
-            .safeAddProperty(ResourceFactory.createProperty("${DCAT.getURI()}first"), seriesData.first)
-            .safeAddProperty(ResourceFactory.createProperty("${DCAT.getURI()}last"), seriesData.last)
+            .safeAddLinkedProperty(ResourceFactory.createProperty("${DCAT.getURI()}first"), seriesData.first)
+            .safeAddLinkedProperty(ResourceFactory.createProperty("${DCAT.getURI()}last"), seriesData.last)
     } else {
         datasetResource
             .addProperty(RDF.type, DCAT.Dataset)
@@ -56,9 +56,9 @@ fun Model.addDatasetResource(dataset: Dataset, seriesData: SeriesData): Resource
             .addPublisher(dataset.publisher)
             .addSubjects(dataset.concepts)
             .addLanguages(dataset.language)
-            .safeAddProperty(ResourceFactory.createProperty("${DCAT.getURI()}inSeries"), seriesData.inSeries)
-            .safeAddProperty(ResourceFactory.createProperty("${DCAT.getURI()}next"), seriesData.next)
-            .safeAddProperty(ResourceFactory.createProperty("${DCAT.getURI()}prev"), seriesData.prev)
+            .safeAddLinkedProperty(ResourceFactory.createProperty("${DCAT.getURI()}inSeries"), seriesData.inSeries)
+            .safeAddLinkedProperty(ResourceFactory.createProperty("${DCAT.getURI()}next"), seriesData.next)
+            .safeAddLinkedProperty(ResourceFactory.createProperty("${DCAT.getURI()}prev"), seriesData.prev)
     }
     return datasetResource
 }
diff --git a/src/test/resources/getAll.ttl b/src/test/resources/getAll.ttl
index 1cadd4d..01edd66 100644
--- a/src/test/resources/getAll.ttl
+++ b/src/test/resources/getAll.ttl
@@ -52,17 +52,17 @@
 <http://localhost:5000/catalogs/123123123/datasets/series0>
         rdf:type        dcat:DatasetSeries ;
         dct:identifier  "http://localhost:5000/catalogs/123123123/datasets/series0" ;
-        dcat:first      "http://localhost:5000/catalogs/123123123/datasets/series1" ;
-        dcat:last       "http://localhost:5000/catalogs/123123123/datasets/series5" .
+        dcat:first      <http://localhost:5000/catalogs/123123123/datasets/series1> ;
+        dcat:last       <http://localhost:5000/catalogs/123123123/datasets/series5> .
 
 <http://localhost:5000/catalogs/123123123/datasets/series1>
         rdf:type        dcat:Dataset ;
         dct:identifier  "http://localhost:5000/catalogs/123123123/datasets/series1" ;
-        dcat:next       "http://localhost:5000/catalogs/123123123/datasets/series5" ;
-        dcat:inSeries   "http://localhost:5000/catalogs/123123123/datasets/series0" .
+        dcat:next       <http://localhost:5000/catalogs/123123123/datasets/series5> ;
+        dcat:inSeries   <http://localhost:5000/catalogs/123123123/datasets/series0> .
 
 <http://localhost:5000/catalogs/123123123/datasets/series5>
         rdf:type        dcat:Dataset ;
         dct:identifier  "http://localhost:5000/catalogs/123123123/datasets/series5" ;
-        dcat:prev       "http://localhost:5000/catalogs/123123123/datasets/series1" ;
-        dcat:inSeries   "http://localhost:5000/catalogs/123123123/datasets/series0" .
+        dcat:prev       <http://localhost:5000/catalogs/123123123/datasets/series1> ;
+        dcat:inSeries   <http://localhost:5000/catalogs/123123123/datasets/series0> .