diff --git a/src/main/java/org/gcube/storagehub/StorageHubManagement.java b/src/main/java/org/gcube/storagehub/StorageHubManagement.java
index 35440dc..7f29d2d 100644
--- a/src/main/java/org/gcube/storagehub/StorageHubManagement.java
+++ b/src/main/java/org/gcube/storagehub/StorageHubManagement.java
@@ -215,7 +215,7 @@ public class StorageHubManagement {
 	 * @param shubPublicLink
 	 * @param fileName
 	 * @param mimeType
-	 * @return
+	 * @return the public link of the persisted file
 	 * @throws Exception
 	 */
 	public URL persistFile(URL shubPublicLink, String fileName, String mimeType)