diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/Constants.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/Constants.java
index b86adb27e..c508d4dbc 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/Constants.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/Constants.java
@@ -12,7 +12,6 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 
 import eu.dnetlib.dhp.application.ArgumentApplicationParser;
 
-
 public class Constants {
 
 	public static final String DOI = "doi";
@@ -29,7 +28,8 @@ public class Constants {
 
 	public static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
 
-	private Constants(){}
+	private Constants() {
+	}
 
 	public static Boolean isSparkSessionManaged(ArgumentApplicationParser parser) {
 		return Optional
@@ -46,5 +46,4 @@ public class Constants {
 			.map((MapFunction<String, R>) value -> OBJECT_MAPPER.readValue(value, clazz), Encoders.bean(clazz));
 	}
 
-
 }
diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareBipFinder.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareBipFinder.java
index b1f671031..3d68db27b 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareBipFinder.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareBipFinder.java
@@ -10,7 +10,6 @@ import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import eu.dnetlib.dhp.utils.DHPUtils;
 import org.apache.commons.io.IOUtils;
 import org.apache.hadoop.hdfs.client.HdfsUtils;
 import org.apache.spark.SparkConf;
@@ -34,6 +33,7 @@ import eu.dnetlib.dhp.schema.oaf.KeyValue;
 import eu.dnetlib.dhp.schema.oaf.Measure;
 import eu.dnetlib.dhp.schema.oaf.Result;
 import eu.dnetlib.dhp.schema.oaf.utils.OafMapperUtils;
+import eu.dnetlib.dhp.utils.DHPUtils;
 
 public class PrepareBipFinder implements Serializable {
 
diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareFOSSparkJob.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareFOSSparkJob.java
index 17631e396..5ae2f8c88 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareFOSSparkJob.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/actionmanager/createunresolvedentities/PrepareFOSSparkJob.java
@@ -8,7 +8,6 @@ import java.io.Serializable;
 import java.util.*;
 import java.util.stream.Collectors;
 
-import eu.dnetlib.dhp.utils.DHPUtils;
 import org.apache.commons.io.IOUtils;
 import org.apache.spark.SparkConf;
 import org.apache.spark.api.java.function.FlatMapFunction;
@@ -26,6 +25,7 @@ import eu.dnetlib.dhp.schema.common.ModelConstants;
 import eu.dnetlib.dhp.schema.oaf.Result;
 import eu.dnetlib.dhp.schema.oaf.StructuredProperty;
 import eu.dnetlib.dhp.schema.oaf.utils.OafMapperUtils;
+import eu.dnetlib.dhp.utils.DHPUtils;
 
 public class PrepareFOSSparkJob implements Serializable {
 	private static final Logger log = LoggerFactory.getLogger(PrepareFOSSparkJob.class);