diff --git a/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/orcid/ORCIDToOAF.scala b/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/orcid/ORCIDToOAF.scala
index 0f6dc4885..1cd3f7028 100644
--- a/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/orcid/ORCIDToOAF.scala
+++ b/dhp-workflows/dhp-doiboost/src/main/java/eu/dnetlib/doiboost/orcid/ORCIDToOAF.scala
@@ -83,9 +83,8 @@ object ORCIDToOAF {
       JObject(extIds) <-  json \ "workDetail" \"extIds"
       JField("type", JString(typeValue)) <- extIds
       JField("value", JString(value)) <- extIds
-      normalized_value: String = DoiBoostMappingUtil.normalizeDoi(value)
-      if "doi".equalsIgnoreCase(typeValue) && normalized_value != null
-    } yield (typeValue, normalized_value)
+      if "doi".equalsIgnoreCase(typeValue)
+    } yield (typeValue, DoiBoostMappingUtil.normalizeDoi(value))
     if (doi.nonEmpty) {
       return doi.map(l =>OrcidWork(oid, l._2))
     }
@@ -103,7 +102,7 @@ object ORCIDToOAF {
   def convertTOOAF(input:ORCIDItem) :Publication = {
     val doi = input.doi
     val pub:Publication = new Publication
-    pub.setPid(List(createSP(doi.toLowerCase, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
+    pub.setPid(List(createSP(doi, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
     pub.setDataInfo(generateDataInfo())
 
     pub.setId(IdentifierFactory.createDOIBoostIdentifier(pub))