diff --git a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
index ea5b574ceda600b7322cc97f75b3947f25dc3fe5..a1bca0ad8083e58861767551d6005fb55354462c 100644
--- a/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
+++ b/source/dnode/vnode/src/tsdb/tsdbMergeTree.c
@@ -759,7 +759,6 @@ int32_t tMergeTreeOpen2(SMergeTree *pMTree, SMergeTreeConf *pConf) {
 
   pMTree->ignoreEarlierTs = false;
 
-  // todo handle other level of stt files, here only deal with the first level stt
   int32_t size = ((STFileSet *)pConf->pCurrentFileset)->lvlArr->size;
   if (size == 0) {
     goto _end;