diff --git a/pkg/query-service/app/http_handler.go b/pkg/query-service/app/http_handler.go
index 5267ac49d3..06d57603ec 100644
--- a/pkg/query-service/app/http_handler.go
+++ b/pkg/query-service/app/http_handler.go
@@ -3128,7 +3128,7 @@ func (aH *APIHandler) liveTailLogs(w http.ResponseWriter, r *http.Request) {
 			var buf bytes.Buffer
 			enc := json.NewEncoder(&buf)
 			enc.Encode(log)
-			fmt.Fprintf(w, "event: log\ndata: %v\n\n", buf.String())
+			fmt.Fprintf(w, "data: %v\n\n", buf.String())
 			flusher.Flush()
 		case <-client.Done:
 			zap.S().Debug("done!")