diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/gcat/Mapper.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/gcat/Mapper.java
index f61b04772..3ef6c1087 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/gcat/Mapper.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/gcat/Mapper.java
@@ -99,7 +99,9 @@ public class Mapper implements Serializable {
 				.ofNullable(input.getDescription())
 				.ifPresent(value -> {
 					Iterator<Field<String>> it = value.iterator();
-					out.setName(it.next().getValue());
+					if (it.hasNext()) {
+						out.setName(it.next().getValue());
+					}
 					it.forEachRemaining(v -> externals.add(KeyValue.newInstance("description", v.getValue())));
 				});