diff --git a/client/daemon/upload/upload_manager.go b/client/daemon/upload/upload_manager.go
index 5a7da1be8..c92edb114 100644
--- a/client/daemon/upload/upload_manager.go
+++ b/client/daemon/upload/upload_manager.go
@@ -212,6 +212,9 @@ func (um *uploadManager) getDownload(ctx *gin.Context) {
 	}
 	defer closer.Close()
 
+	// write header immediately, prevent client disconnecting after limiter.Wait() due to response header timeout
+	ctx.Writer.WriteHeaderNow()
+
 	if um.Limiter != nil {
 		if err = um.Limiter.WaitN(ctx, int(rg[0].Length)); err != nil {
 			log.Errorf("get limit failed: %s", err)