diff --git a/source/libs/function/src/tpercentile.c b/source/libs/function/src/tpercentile.c
index d45d60d50e..9c3e1f5604 100644
--- a/source/libs/function/src/tpercentile.c
+++ b/source/libs/function/src/tpercentile.c
@@ -368,11 +368,13 @@ int32_t tMemBucketPut(tMemBucket *pBucket, const void *data, size_t size) {
         pSlot->info.data = NULL;
       }
 
-      SArray *pPageIdList = (SArray *)taosHashGet(pBucket->groupPagesMap, &groupId, sizeof(groupId));
-      if (pPageIdList == NULL) {
-        SArray *pList = taosArrayInit(4, sizeof(int32_t));
-        taosHashPut(pBucket->groupPagesMap, &groupId, sizeof(groupId), &pList, POINTER_BYTES);
-        pPageIdList = pList;
+      SArray *pPageIdList;
+      void *p = taosHashGet(pBucket->groupPagesMap, &groupId, sizeof(groupId));
+      if (p == NULL) {
+        pPageIdList = taosArrayInit(4, sizeof(int32_t));
+        taosHashPut(pBucket->groupPagesMap, &groupId, sizeof(groupId), &pPageIdList, POINTER_BYTES);
+      } else {
+        pPageIdList = *(SArray **)p;
       }
 
       pSlot->info.data = getNewBufPage(pBucket->pBuffer, &pageId);