diff --git a/plugins/virtuoso/lib/virtuoso_plugin/dspace_harvest.rb b/plugins/virtuoso/lib/virtuoso_plugin/dspace_harvest.rb
index 18edb93..7b7f7c8 100644
--- a/plugins/virtuoso/lib/virtuoso_plugin/dspace_harvest.rb
+++ b/plugins/virtuoso/lib/virtuoso_plugin/dspace_harvest.rb
@@ -22,12 +22,13 @@ class VirtuosoPlugin::DspaceHarvest
 
   def triplify(record)
     metadata = VirtuosoPlugin::DublinCoreMetadata.new(record.metadata)
-    puts "triplify #{record.header.identifier}"
+    subject_identifier = extract_identifier(record)
+    puts "triplify #{subject_identifier}"
 
     settings.ontology_mapping.each do |mapping|
       values = [metadata.extract_field(mapping[:source])].flatten.compact
       values.each do |value|
-        query = RDF::Virtuoso::Query.insert_data([RDF::URI.new(metadata.identifier), RDF::URI.new(mapping[:target]), value]).graph(RDF::URI.new(@dspace_uri))
+        query = RDF::Virtuoso::Query.insert_data([RDF::URI.new(subject_identifier), RDF::URI.new(mapping[:target]), value]).graph(RDF::URI.new(@dspace_uri))
         plugin.virtuoso_client.insert(query)
       end
     end
@@ -85,4 +86,11 @@ class VirtuosoPlugin::DspaceHarvest
     end
   end
 
+  protected
+
+  def extract_identifier(record)
+    parsed_identifier = /oai:(.+):(\d+\/\d+)/.match(record.header.identifier)
+    "#{@dspace_uri}/handle/#{parsed_identifier[2]}"
+  end
+
 end
diff --git a/plugins/virtuoso/lib/virtuoso_plugin/dublin_core_metadata.rb b/plugins/virtuoso/lib/virtuoso_plugin/dublin_core_metadata.rb
index 62e85aa..f8990d4 100644
--- a/plugins/virtuoso/lib/virtuoso_plugin/dublin_core_metadata.rb
+++ b/plugins/virtuoso/lib/virtuoso_plugin/dublin_core_metadata.rb
@@ -21,7 +21,7 @@ class VirtuosoPlugin::DublinCoreMetadata
     when 1
       value.first.text
     else
-      value.map { |v| v.respond_to?(:text) ? v.text : v}
+      value.map(&:text)
     end
   end
 
--
libgit2 0.21.2