diff --git a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
index 98c9c0fdda..e8181f922f 100644
--- a/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
+++ b/source/dnode/vnode/src/tsdb/tsdbSnapshot.c
@@ -1205,7 +1205,7 @@ static int32_t tsdbSnapWriteTableRow(STsdbSnapWriter* pWriter, TSDBROW* pRow) {
             TSDB_CHECK_CODE(code, lino, _exit);
           }
 
-          tMapDataPutItem(&pWriter->pDIter->dIter.mDataBlk, &dataBlk, tPutDataBlk);
+          tMapDataPutItem(&pWriter->mDataBlk, &dataBlk, tPutDataBlk);
           pWriter->pDIter->dIter.iDataBlk++;
         } else {
           code = tsdbReadDataBlockEx(pWriter->pDataFReader, &dataBlk, &pWriter->pDIter->dIter.bData);