diff --git a/source/libs/executor/src/tsort.c b/source/libs/executor/src/tsort.c
index e633af12ed..22c3f14b43 100644
--- a/source/libs/executor/src/tsort.c
+++ b/source/libs/executor/src/tsort.c
@@ -1112,6 +1112,8 @@ static int32_t destroySortMemFile(SSortHandle* pHandle) {
   tSimpleHashCleanup(pMemFile->mActivePages);
   taosMemoryFree(pMemFile->pageBuf);
   taosCloseFile(&pMemFile->pTdFile);
+  taosMemoryFree(pMemFile);
+  pHandle->pExtRowsMemFile = NULL;
   return TSDB_CODE_SUCCESS;
 }