diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java
index afff12992..43291e5de 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java
@@ -20,9 +20,9 @@ public class XSLTTransformationFunction implements MapFunction<MetadataRecord, M
 
 	public final static String QNAME_BASE_URI = "http://eu/dnetlib/transform";
 
-	private final static  String DATASOURCE_ID_PARAM="varDataSourceId";
+	private final static String DATASOURCE_ID_PARAM = "varDataSourceId";
 
-	private final static  String DATASOURCE_NAME_PARAM="varOfficialName";
+	private final static String DATASOURCE_NAME_PARAM = "varOfficialName";
 
 	private final AggregationCounter aggregationCounter;
 
diff --git a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java
index 0400714d4..0fdc89533 100644
--- a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java
+++ b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java
@@ -10,7 +10,6 @@ import java.util.Map;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import eu.dnetlib.dhp.schema.mdstore.Provenance;
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.spark.SparkConf;
@@ -28,6 +27,7 @@ import org.mockito.junit.jupiter.MockitoExtension;
 import eu.dnetlib.dhp.aggregation.AbstractVocabularyTest;
 import eu.dnetlib.dhp.aggregation.common.AggregationCounter;
 import eu.dnetlib.dhp.schema.mdstore.MetadataRecord;
+import eu.dnetlib.dhp.schema.mdstore.Provenance;
 import eu.dnetlib.dhp.transformation.xslt.DateCleaner;
 import eu.dnetlib.dhp.transformation.xslt.XSLTTransformationFunction;
 import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpException;