diff --git a/dhp-common/src/main/java/eu/dnetlib/dhp/common/MdstoreClient.java b/dhp-common/src/main/java/eu/dnetlib/dhp/common/MdstoreClient.java
index 38837b5570..0bc782ccb9 100644
--- a/dhp-common/src/main/java/eu/dnetlib/dhp/common/MdstoreClient.java
+++ b/dhp-common/src/main/java/eu/dnetlib/dhp/common/MdstoreClient.java
@@ -13,6 +13,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.bson.Document;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.collect.Iterables;
 import com.mongodb.BasicDBObject;
@@ -21,8 +23,6 @@ import com.mongodb.MongoClientURI;
 import com.mongodb.QueryBuilder;
 import com.mongodb.client.MongoCollection;
 import com.mongodb.client.MongoDatabase;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 public class MdstoreClient implements Closeable {
 
diff --git a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/mdstore/MetadataRecord.java b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/mdstore/MetadataRecord.java
index 9586680e3a..8277e14698 100644
--- a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/mdstore/MetadataRecord.java
+++ b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/mdstore/MetadataRecord.java
@@ -8,7 +8,7 @@ import eu.dnetlib.dhp.schema.common.ModelSupport;
 /**
  * This class models a record in a Metadata store collection on HDFS
  */
-	public class MetadataRecord implements Serializable {
+public class MetadataRecord implements Serializable {
 
 	/** The D-Net Identifier associated to the record */
 	private String id;