diff --git a/web/server.go b/web/server.go
index 39652cf..812e720 100644
--- a/web/server.go
+++ b/web/server.go
@@ -152,6 +152,7 @@ func (s *Server) HandlerAttemptStream(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Access-Control-Allow-Origin", "*")
 	id, ch := s.addAttemptListener()
 	defer s.closeAttemptListener(id)
+	w.WriteHeader(http.StatusOK)
 
 	flusher := w.(http.Flusher)
 	ticker := time.NewTicker(30 * time.Second)