diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index ac6c2e0c5a9d5590e7dd57863dd18d8726912de5..5b0896ae6f912f143a4649e8fb620955cda6462e 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -1263,7 +1263,6 @@ static void copyAllRemainRowsFromFileBlock(STsdbQueryHandle* pQueryHandle, STabl
   int32_t end = endPos;
 
   if (!ASCENDING_TRAVERSE(pQueryHandle->order)) {
-    assert(start >= end);
     SWAP(start, end, int32_t);
   }