diff --git a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java
index cfd740e..3f6b19d 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/WorkspaceUploadServletStream.java
@@ -240,7 +240,6 @@ public class WorkspaceUploadServletStream extends HttpServlet implements Servlet
 					}catch(Exception e){
 						//Silent exception;
 					}
-
 				}
 
 				if(item.isFormField() && CLIENT_UPLOAD_KEYS.equals(item.getFieldName())){
@@ -755,7 +754,7 @@ public class WorkspaceUploadServletStream extends HttpServlet implements Servlet
 					Validate.notNull(folderDestination, "The folder destionation is null");
 
 					logger.trace("[3] HttpServletRequest is: URI: "+request.getRequestURI() +", ServerName: "+request.getServerName());
-					NotificationsWorkspaceUploader.checkSendNotifyChangedItemToShare(storageWrapper, request, currUser, scopeGroupId, np, httpSession, sourceItem, sourceSharedId, folderDestination,isOverwrite);
+					NotificationsWorkspaceUploader.checkSendNotifyChangedItemToShare(storageWrapper, request, currUser, scopeGroupId, np, httpSession, sourceItem, sourceSharedId, folderDestination);
 
 				} catch (Exception e) {
 					logger.error("Error in notifyUploadInSharedFolder", e);
diff --git a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/notification/NotificationsWorkspaceUploader.java b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/notification/NotificationsWorkspaceUploader.java
index 447f8be..2197863 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/notification/NotificationsWorkspaceUploader.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/notification/NotificationsWorkspaceUploader.java
@@ -14,6 +14,7 @@ import org.gcube.applicationsupportlayer.social.shared.SocialSharedFolder;
 import org.gcube.common.storagehub.model.items.FolderItem;
 import org.gcube.common.storagehub.model.items.Item;
 import org.gcube.common.storagehub.model.items.SharedFolder;
+import org.gcube.common.storagehub.model.service.Version;
 import org.gcube.common.storagehub.model.types.WorkspaceItemType;
 import org.gcube.common.storagehubwrapper.server.StorageHubWrapper;
 import org.gcube.common.storagehubwrapper.server.tohl.Workspace;
@@ -52,18 +53,19 @@ public class NotificationsWorkspaceUploader {
 	 * @param folderDestinationItem the folder destination item
 	 * @param isOverwrite the is overwrite
 	 */
-	public static void checkSendNotifyChangedItemToShare(StorageHubWrapper storageWrapper, HttpServletRequest request, GCubeUser currUser, String scopeGroupId, NotificationsWorkspaceUploaderProducer np, HttpSession httpSession, final Item sourceItem, final String sourceSharedId, final FolderItem folderDestinationItem, boolean isOverwrite) {
+	public static void checkSendNotifyChangedItemToShare(StorageHubWrapper storageWrapper, HttpServletRequest request, GCubeUser currUser, String scopeGroupId, NotificationsWorkspaceUploaderProducer np, HttpSession httpSession, final Item sourceItem, final String sourceSharedId, final FolderItem folderDestinationItem) {
 
-		logger.trace("checkSendNotifyAddItemToShare");
+		logger.debug("checkSendNotifyChangedItemToShare called");
 
 		if(folderDestinationItem!=null){
-
+			
 			try{
 				if(folderDestinationItem.isShared()){ 	//Notify Added Item To Sharing?
 					logger.trace("checkNotifyAddItemToShare source item: "+sourceItem.getName()+" sourceSharedId: "+sourceSharedId + " folder destination name: "+folderDestinationItem.getName() + " folder destination id: "+folderDestinationItem.getId());
 					//share condition is true if source shared folder is not null
+					
 					boolean shareChangeCondition = sourceSharedId==null?false:true;
-					logger.trace("shareChangeCondition add item: "+shareChangeCondition);
+					logger.debug("shareChangeCondition add item: "+shareChangeCondition);
 
 					//if shareChangeCondition is true.. notifies added item to sharing
 					if(shareChangeCondition){
@@ -88,9 +90,18 @@ public class NotificationsWorkspaceUploader {
 
 						//TO folderDest or rootSharedFolder??
 						SocialSharedFolder socialFolder = NotificationMapper.toSocialFolder(rootSharedFolder);
+						
+						boolean isUpdate = false;
+						try {
+							List<Version> versions = storageWrapper.getStorageHubClientService().getListVersions(sourceItem.getId());
+							isUpdate = versions.size()>1?true:false;
+							logger.debug("Is file updating? "+shareChangeCondition);
+						}catch (Exception e) {
+							//silent
+						}
 
-						//SWITCH BEETWEEN ADDED OR UPDATED
-						if(!isOverwrite)
+						//SWITCH BETWEEN ADDED OR UPDATED
+						if(!isUpdate)
 							np.notifyAddedItemToSharing(listContacts, socialItem, socialFolder);
 						else
 							np.notifyUpdatedItemToSharing(listContacts, socialItem, socialFolder);