diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index d7ff03ec59..647f039d96 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -927,7 +927,7 @@ int32_t avgFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
 
   // check for overflow
   if (isinf(pAvgRes->result) || isnan(pAvgRes->result)) {
-    GET_RES_INFO(pCtx)->isNullRes = 1;
+    GET_RES_INFO(pCtx)->numOfRes = 0;
   }
 
   return functionFinalize(pCtx, pBlock);