diff -r 08c99d286e7c -r b37fde30dd4a server/src/app/Libraries/Mappers/CocoonContentRdfMapper.php
--- a/server/src/app/Libraries/Mappers/CocoonContentRdfMapper.php	Thu Feb 11 15:42:27 2016 +0100
+++ b/server/src/app/Libraries/Mappers/CocoonContentRdfMapper.php	Fri Feb 12 15:30:32 2016 +0100
@@ -99,7 +99,7 @@
 
         // add identifier
         $resId = CocoonUtils::getIdFromUri($this->getResourceBaseId($res));
-        $providedCHOResource->add('http://purl.org/dc/terms/identifier', $resId);
+        $providedCHOResource->add('http://purl.org/dc/elements/1.1/identifier', $resId);
 
         $this->addCHOResourceProperties($providedCHOResource, $res, $outputGraph);