diff --git a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/converter/ItemToZenodoConverter.java b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/converter/ItemToZenodoConverter.java
index 6e02501..1a60ccb 100644
--- a/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/converter/ItemToZenodoConverter.java
+++ b/src/main/java/org/gcube/portlets/widgets/ckan2zenodopublisher/server/converter/ItemToZenodoConverter.java
@@ -236,7 +236,7 @@ public class ItemToZenodoConverter {
 		//Licenses
 		SerializableEnum<String> selectedLicenses = null;
 		if(depositionMetadata.getLicense()!=null) {
-			selectedLicenses = new SerializableEnum<String>(Arrays.asList(depositionMetadata.getLicense()), null);  //NEED TO ADD ALL LICENSES 
+			selectedLicenses = new SerializableEnum<String>(Arrays.asList(depositionMetadata.getLicense()), new ArrayList<String>());  //NEED TO ADD ALL LICENSES 
 		}
 		if(selectedLicenses!=null) {
 			zm.setLicenses(selectedLicenses);