diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 690319a4cf..5f96b9e287 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -561,7 +561,7 @@ int32_t sumFunction(SqlFunctionCtx* pCtx) {
 
   // check for overflow
   if (IS_FLOAT_TYPE(type) && (isinf(pSumRes->dsum) || isnan(pSumRes->dsum))) {
-    numOfElems = 0;
+    numOfElem = 0;
   }
 
 _sum_over: