diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java
index 7a04e0c3d..5b6ae72f1 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/AbstractMdRecordToOafMapper.java
@@ -57,7 +57,11 @@ public abstract class AbstractMdRecordToOafMapper {
 			DocumentFactory.getInstance().setXPathNamespaceURIs(nsContext);
 
 			final Document doc = DocumentHelper
-				.parseText(xml.replaceAll(DATACITE_SCHEMA_KERNEL_4, DATACITE_SCHEMA_KERNEL_3).replaceAll(DATACITE_SCHEMA_KERNEL_4_SLASH, DATACITE_SCHEMA_KERNEL_3).replaceAll(DATACITE_SCHEMA_KERNEL_3_SLASH, DATACITE_SCHEMA_KERNEL_3));
+				.parseText(
+					xml
+						.replaceAll(DATACITE_SCHEMA_KERNEL_4, DATACITE_SCHEMA_KERNEL_3)
+						.replaceAll(DATACITE_SCHEMA_KERNEL_4_SLASH, DATACITE_SCHEMA_KERNEL_3)
+						.replaceAll(DATACITE_SCHEMA_KERNEL_3_SLASH, DATACITE_SCHEMA_KERNEL_3));
 
 			final KeyValue collectedFrom = getProvenanceDatasource(
 				doc, "//oaf:collectedFrom/@id", "//oaf:collectedFrom/@name");
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java
index fa0e5221d..6fe7bb971 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/raw/OdfToOafMapper.java
@@ -12,11 +12,12 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
-import com.google.common.collect.Lists;
 import org.apache.commons.lang3.StringUtils;
 import org.dom4j.Document;
 import org.dom4j.Node;
 
+import com.google.common.collect.Lists;
+
 import eu.dnetlib.dhp.common.PacePerson;
 import eu.dnetlib.dhp.oa.graph.raw.common.VocabularyGroup;
 import eu.dnetlib.dhp.schema.oaf.Author;
diff --git a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
index 50f190a61..2c10f8f58 100644
--- a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
+++ b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/raw/MappersTest.java
@@ -276,7 +276,6 @@ public class MappersTest {
 		System.out.println("***************");
 	}
 
-
 	@Test
 	void testClaimDedup() throws IOException {
 		final String xml = IOUtils.toString(getClass().getResourceAsStream("oaf_claim_dedup.xml"));