diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index 8e69a2923492b2bfaf1ffe255ece0a75fd919c43..d63b6525bc3aaed0af547ea02a61c5ef785cfe93 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -559,9 +559,9 @@ static int32_t getFileCompInfo(STsdbQueryHandle* pQueryHandle, int32_t* numOfBlo
     TSKEY s = TSKEY_INITIAL_VAL, e = TSKEY_INITIAL_VAL;
 
     if (ASCENDING_TRAVERSE(pQueryHandle->order)) {
-      assert(pCheckInfo->lastKey >= pQueryHandle->window.ekey && pQueryHandle->window.skey <= pQueryHandle->window.ekey);
+      assert(pCheckInfo->lastKey <= pQueryHandle->window.ekey && pQueryHandle->window.skey <= pQueryHandle->window.ekey);
     } else {
-      assert(pCheckInfo->lastKey <= pQueryHandle->window.ekey && pQueryHandle->window.skey >= pQueryHandle->window.ekey);
+      assert(pCheckInfo->lastKey >= pQueryHandle->window.ekey && pQueryHandle->window.skey >= pQueryHandle->window.ekey);
     }
 
     s = MIN(pCheckInfo->lastKey, pQueryHandle->window.ekey);