diff --git a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/util/WsUtil.java b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/util/WsUtil.java
index 47f6451..aae17bb 100644
--- a/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/util/WsUtil.java
+++ b/src/main/java/org/gcube/portlets/widgets/workspaceuploader/server/util/WsUtil.java
@@ -65,7 +65,7 @@ public class WsUtil {
 	 * Gets the storage hub wrapper.
 	 *
 	 * @param request the request
-	 * @param scopeGroupId the scope group id
+	 * @param scopeGroupId the scope group id. If scopeGroupId is null the scope is read by using the request else by using the scopeGroupId
 	 * @param user the user
 	 * @return the storage hub wrapper
 	 * @throws InternalErrorException the internal error exception