diff --git a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Instance.java b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Instance.java
index 36013837e..edc6f28f5 100644
--- a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Instance.java
+++ b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Instance.java
@@ -24,10 +24,8 @@ public class Instance implements Serializable {
 
 	private String type;
 
-
 	private List<String> url;
 
-
 	private String publicationdate;// dateofacceptance;
 
 	private String refereed; // peer-review status
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java
index f5ffb6e0f..9bb6653d0 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java
@@ -373,7 +373,6 @@ public class ResultMapper implements Serializable {
 	private static Instance getGraphInstance(eu.dnetlib.dhp.schema.oaf.Instance i) {
 		Instance instance = new Instance();
 
-
 		setCommonValue(i, instance);
 
 		return instance;