diff --git a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/FilesStorage.java b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/FilesStorage.java
index 7e9624e..6cd6237 100644
--- a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/FilesStorage.java
+++ b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/FilesStorage.java
@@ -679,7 +679,7 @@ public class FilesStorage {
 	 * @throws StatAlgoImporterServiceException
 	 *             Exception
 	 */
-	public InputStream retrieveInputStream(String user, WorkspaceItem wi) throws StatAlgoImporterServiceException {
+	private InputStream retrieveInputStream(String user, WorkspaceItem wi) throws StatAlgoImporterServiceException {
 		InputStream is = null;
 		try {
 			logger.info("Retrieve input stream: [user=" + user + ", workspaceItem=" + wi + "]");