diff --git a/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java b/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java
index 8361e5e..91cdc89 100644
--- a/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java
+++ b/src/main/java/org/gcube/gcat/persistence/ckan/CKANPackage.java
@@ -125,6 +125,8 @@ public class CKANPackage extends CKAN implements Moderated {
 	
 	protected final CatalogueConfiguration configuration;
 	
+	protected boolean updateOperation;
+	
 	protected ModerationThread moderationThread;
 	
 	public CKANPackage() {
@@ -142,6 +144,8 @@ public class CKANPackage extends CKAN implements Moderated {
 		configuration = CatalogueConfigurationFactory.getInstance();
 		
 		ckanUser = CKANUserCache.getCurrrentCKANUser();
+		
+		updateOperation = false;
 
 	}
 	
@@ -287,9 +291,13 @@ public class CKANPackage extends CKAN implements Moderated {
 		if(authorName==null || authorName.compareTo("")==0) {
 			authorName = ckanUser.getName();
 		}
-		objectNode.put(AUTHOR_KEY, authorName);
 		String authorEmail = ckanUser.getEMail();
-		objectNode.put(AUTHOR_EMAIL_KEY, authorEmail);
+		
+		
+		if(!updateOperation) { // this prevent to change the original author in case of update
+			objectNode.put(AUTHOR_KEY, authorName);
+			objectNode.put(AUTHOR_EMAIL_KEY, authorEmail);
+		}
 		
 		
 		if(!objectNode.has(MAINTAINER_KEY)) {
@@ -828,6 +836,8 @@ public class CKANPackage extends CKAN implements Moderated {
 	@Override
 	public String update(String json) {
 		try {
+			this.updateOperation = true;
+			
 			JsonNode jsonNode = validateJson(json);
 			
 			/*
@@ -902,6 +912,8 @@ public class CKANPackage extends CKAN implements Moderated {
 	@Override
 	public String patch(String json) {
 		try {
+			this.updateOperation = true;
+			
 			readItem();
 			
 			JsonNode jsonNode = checkBaseInformation(json, true);