diff --git a/src/main/java/org/gcube/portal/GetCaller.java b/src/main/java/org/gcube/portal/GetCaller.java
index ba4283f..635fa68 100644
--- a/src/main/java/org/gcube/portal/GetCaller.java
+++ b/src/main/java/org/gcube/portal/GetCaller.java
@@ -8,7 +8,7 @@ import java.util.List;
 import javax.net.ssl.HttpsURLConnection;
 
 public class GetCaller extends Thread {
-	private final int WAITING_MILLISECONDS = 720000; 
+	private final int WAITING_MILLISECONDS = 900000; 
 
 	private final static String USER_AGENT = "Mozilla/5.0";