diff --git a/internal/querycoordv2/task/utils.go b/internal/querycoordv2/task/utils.go
index e895f6af5d..23fce606b6 100644
--- a/internal/querycoordv2/task/utils.go
+++ b/internal/querycoordv2/task/utils.go
@@ -198,7 +198,6 @@ func fillSubChannelRequest(
 ) error {
 	segmentIDs := typeutil.NewUniqueSet()
 	for _, vchannel := range req.GetInfos() {
-		segmentIDs.Insert(vchannel.GetFlushedSegmentIds()...)
 		segmentIDs.Insert(vchannel.GetUnflushedSegmentIds()...)
 	}