diff --git a/src/upload.rs b/src/upload.rs
index 1066d76..c864247 100644
--- a/src/upload.rs
+++ b/src/upload.rs
@@ -217,7 +217,7 @@ impl Uploader {
                             },
                         );
                 }
-                ack(ctx);
+                ctx.text(self.storage_filename.as_str());
             }
             ws::Message::Binary(data)
             | ws::Message::Continuation(Item::FirstBinary(data))