diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index 6c16c72c2ab020819f25a2b28db515fa424d6b09..a68a170554adccd2df12d48bd23957ba5b7f506d 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -3098,7 +3098,7 @@ STimeWindow updateLastrowForEachGroup(STableGroupInfo *groupList) {
     assert(totalNumOfTable == 0 && taosArrayGetSize(groupList->pGroupList) == numOfGroups);
   }
 
-  taosArrayRemoveBatch(groupList->pGroupList, TARRAY_GET_START(emptyGroup), taosArrayGetSize(emptyGroup));
+  taosArrayRemoveBatch(groupList->pGroupList, TARRAY_GET_START(emptyGroup), (int32_t) taosArrayGetSize(emptyGroup));
   taosArrayDestroy(emptyGroup);
 
   groupList->numOfTables = totalNumOfTable;