diff --git a/src/tsdb/src/tsdbMain.c b/src/tsdb/src/tsdbMain.c
index 69a35b3d7832a31528657df71d5c169f4a524974..8969f61596b33f37cabe934fdd56819b71575315 100644
--- a/src/tsdb/src/tsdbMain.c
+++ b/src/tsdb/src/tsdbMain.c
@@ -597,7 +597,7 @@ int tsdbRestoreInfo(STsdbRepo *pRepo) {
           // Get the data in row
           ASSERT(pTable->lastRow == NULL);
           STSchema *pSchema = tsdbGetTableSchema(pTable);
-          pTable->lastRow = taosTMalloc(schemaTLen(pSchema));
+          pTable->lastRow = taosTMalloc(dataRowMaxBytesFromSchema(pSchema));
           if (pTable->lastRow == NULL) {
             terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
             tsdbDestroyReadH(&readh);