diff --git a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
index 64ad628..389e880 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/server/GWTWorkspaceServiceImpl.java
@@ -2602,9 +2602,9 @@ public class GWTWorkspaceServiceImpl extends RemoteServiceServlet implements GWT
 
 					
 					//VALIDATE CONNECTION
-					if(!HttpRequestUtil.urlExists(uriRequest))
+					if(!HttpRequestUtil.urlExists(uriRequest+"&validation=true"))
 						throw new Exception("Sorry, The Public Link for selected file is unavailable");
-						
+					
 					if(shortenUrl)	
 						uriRequest = getShortUrl(uriRequest);