diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index 026222f83a..b0a74c3002 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -1543,6 +1543,7 @@ void destroyStreamFinalIntervalOperatorInfo(void* param, int32_t numOfOutput) {
   taosArrayDestroy(pInfo->pPullWins);
   blockDataDestroy(pInfo->pPullDataRes);
   taosArrayDestroy(pInfo->pRecycledPages);
+  blockDataDestroy(pInfo->pUpdateRes);
 
   if (pInfo->pChildren) {
     int32_t size = taosArrayGetSize(pInfo->pChildren);