diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index 9cb520efc7fc7e253b1de7e55aeaf93b15a1eb49..9e07ce0b0ed9c0314bbfed610ab486a5a316739d 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -3910,7 +3910,6 @@ void tsdbReaderClose(STsdbReader* pReader) {
   if (pReader->freeBlock) {
     pReader->pResBlock = blockDataDestroy(pReader->pResBlock);
   }
-  taosMemoryFree(pSupInfo->buildBuf);
   tBlockDataDestroy(&pReader->status.fileBlockData);
 
   taosMemoryFree(pSupInfo->colId);