diff --git a/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java b/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
index c7c2eae..1977305 100644
--- a/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
+++ b/src/main/java/org/gcube/common/storagehubwrapper/server/WorkspaceStorageHubClientService.java
@@ -908,7 +908,12 @@ public final class WorkspaceStorageHubClientService implements Workspace{
 
 		try {
 			StreamDescriptor streamDesc = storageHubClientService.downloadFile(itemId, versionName, nodeIdsToExclude);
-			return new org.gcube.common.storagehubwrapper.shared.tohl.impl.StreamDescriptor(streamDesc.getStream(), streamDesc.getFileName(), null, null);
+			
+			Long size = null;
+			if(streamDesc.getContentLenght()>0)
+				size = new Long(streamDesc.getContentLenght());
+			
+			return new org.gcube.common.storagehubwrapper.shared.tohl.impl.StreamDescriptor(streamDesc.getStream(), streamDesc.getFileName(), size, streamDesc.getContentType());
 		} catch (Exception e) {
 			LOGGER.error("Error on downloading the file: "+fileName+ " with id: "+itemId, e);
 			String error = e.getMessage()!=null?e.getMessage():"";