diff --git a/pom.xml b/pom.xml
index 874ab95..4d09e75 100644
--- a/pom.xml
+++ b/pom.xml
@@ -132,20 +132,6 @@
 		</dependency>
 
 
-		<!-- OVERRIDE NAMESPACE PREFIX -->
-
-		<dependency>
-			<groupId>com.sun.xml.bind</groupId>
-			<artifactId>jaxb-impl</artifactId>
-			<version>2.2.11</version>
-		</dependency>
-		<dependency>
-			<groupId>com.sun.xml.bind</groupId>
-			<artifactId>jaxb-core</artifactId>
-			<version>2.2.11</version>
-		</dependency>
-
-
 
 
 		<!-- TEST -->
diff --git a/src/main/java/org/gcube/data/transfer/plugins/thredds/ISOMetadataMarshalling.java b/src/main/java/org/gcube/data/transfer/plugins/thredds/ISOMetadataMarshalling.java
index 614549a..05a71f7 100644
--- a/src/main/java/org/gcube/data/transfer/plugins/thredds/ISOMetadataMarshalling.java
+++ b/src/main/java/org/gcube/data/transfer/plugins/thredds/ISOMetadataMarshalling.java
@@ -5,8 +5,6 @@ import static java.util.Collections.singletonMap;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
 
 import javax.xml.bind.JAXBException;
 import javax.xml.transform.stream.StreamResult;
@@ -15,8 +13,6 @@ import org.apache.sis.xml.MarshallerPool;
 import org.apache.sis.xml.XML;
 import org.opengis.metadata.Metadata;
 
-import com.sun.xml.bind.marshaller.NamespacePrefixMapper;
-
 import lombok.Synchronized;
 
 public class ISOMetadataMarshalling {
@@ -45,30 +41,5 @@ public class ISOMetadataMarshalling {
 	}
 	
 	
-	public static class Mapper  extends NamespacePrefixMapper {
-		
-		private Map<String, String> namespaceMap = new HashMap<>();
-
-		/**
-		 * Create mappings.
-		 */
-		public Mapper() {
-			
-			
-			
-			
-			namespaceMap.put("http://www.w3.org/2001/XMLSchema-instance", "xsi");
-			namespaceMap.put("https://www.intertech.com/software-consulting-services/", "consult");
-			namespaceMap.put("http://www.w3.org/2003/05/soap-envelope/", "soap");
-		}
-
-		/* (non-Javadoc)
-		 * Returning null when not found based on spec.
-		 * @see com.sun.xml.bind.marshaller.NamespacePrefixMapper#getPreferredPrefix(java.lang.String, java.lang.String, boolean)
-		 */
-		@Override
-		public String getPreferredPrefix(String namespaceUri, String suggestion, boolean requirePrefix) {
-			return namespaceMap.getOrDefault(namespaceUri, suggestion);
-		}
-	}
+	
 }