diff --git a/source/dnode/vnode/src/tsdb/tsdbRead2.c b/source/dnode/vnode/src/tsdb/tsdbRead2.c
index 27e7da11df..7505230eca 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead2.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead2.c
@@ -650,7 +650,6 @@ static int32_t doLoadFileBlock(STsdbReader* pReader, SArray* pIndexList, SBlockN
   int32_t      k = 0;
   int32_t      numOfTables = tSimpleHashGetSize(pReader->status.pTableMap);
   bool         asc = ASCENDING_TRAVERSE(pReader->info.order);
-  int32_t      step = asc ? 1 : -1;
   STimeWindow  w = pReader->info.window;
   SBrinRecord* pRecord = NULL;
 
@@ -710,7 +709,8 @@ static int32_t doLoadFileBlock(STsdbReader* pReader, SArray* pIndexList, SBlockN
       continue;
     }
 
-    if (pkCompEx(pReader->pkComparFn, &pRecord->lastKey.key, &pScanInfo->lastProcKey) <= 0) {
+    int32_t ret = pkCompEx(pReader->pkComparFn, &pRecord->lastKey.key, &pScanInfo->lastProcKey);
+    if ((asc && ret <= 0) || (!asc && ret >= 0)) {
       continue;
     }