diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/graph/GraphMappingUtils.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/graph/GraphMappingUtils.java
index 7c0967b2e..0291be47e 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/graph/GraphMappingUtils.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/graph/GraphMappingUtils.java
@@ -18,13 +18,13 @@ public class GraphMappingUtils {
 	public final static Map<String, Class> types = Maps.newHashMap();
 
 	static {
-			types.put("datasource", Datasource.class);
-			types.put("organization", Organization.class);
+		types.put("datasource", Datasource.class);
+		types.put("organization", Organization.class);
 		types.put("project", Project.class);
-			types.put("dataset", Dataset.class);
-			types.put("otherresearchproduct", OtherResearchProduct.class);
-			types.put("software", Software.class);
-			types.put("publication", Publication.class);
+		types.put("dataset", Dataset.class);
+		types.put("otherresearchproduct", OtherResearchProduct.class);
+		types.put("software", Software.class);
+		types.put("publication", Publication.class);
 		types.put("relation", Relation.class);
 	}