1 files changed, 2 insertions, 3 deletions
diff --git a/src/com/vaadin/terminal/gwt/server/CommunicationManager.java b/src/com/vaadin/terminal/gwt/server/CommunicationManager.java
index 111f43b31f..5851621a20 100644
--- a/src/com/vaadin/terminal/gwt/server/CommunicationManager.java
+++ b/src/com/vaadin/terminal/gwt/server/CommunicationManager.java
@@ -396,9 +396,8 @@ public class CommunicationManager extends AbstractCommunicationManager {
             streamVariableToSeckey.put(value, seckey);
         }
 
-        return getApplication().getURL()
-                + AbstractApplicationServlet.UPLOAD_URL_PREFIX + key + "/"
-                + seckey;
+        return "app://" + AbstractApplicationServlet.UPLOAD_URL_PREFIX + key
+                + "/" + seckey;
 
     }