diff --git a/app/dl/serve.go b/app/dl/serve.go
index 21569db7e1..a575a946c8 100644
--- a/app/dl/serve.go
+++ b/app/dl/serve.go
@@ -80,7 +80,7 @@ func serve(ctx context.Context,
 			}
 
 			if iter.Value().Msg.GetID() != message {
-				return fmt.Errorf("msg may be deleted, id: %d", message)
+				return fmt.Errorf("the message %d/%d may be deleted", p.ID(), message)
 			}
 
 			item, err = convItem(iter.Value())
diff --git a/app/internal/dliter/iter.go b/app/internal/dliter/iter.go
index 35caca9973..9d408bc6fe 100644
--- a/app/internal/dliter/iter.go
+++ b/app/internal/dliter/iter.go
@@ -105,7 +105,7 @@ func (iter *Iter) item(ctx context.Context, i, j int) (*downloader.Item, error)
 
 	// check again to avoid deleted message
 	if message.ID != msg {
-		return nil, fmt.Errorf("msg may be deleted, id: %d", msg)
+		return nil, fmt.Errorf("the message %d/%d may be deleted", id, msg)
 	}
 
 	item, ok := tmedia.GetMedia(message)