diff --git a/source/util/src/tpagedbuf.c b/source/util/src/tpagedbuf.c
index a48199f4b2..4d5532b9a6 100644
--- a/source/util/src/tpagedbuf.c
+++ b/source/util/src/tpagedbuf.c
@@ -639,7 +639,6 @@ void clearDiskbasedBuf(SDiskbasedBuf* pBuf) {
   }
 
   taosArrayClear(pBuf->pIdList);
-  pBuf->pIdList = NULL;
 
   tdListEmpty(pBuf->lruList);
   tdListEmpty(pBuf->freePgList);