diff --git a/src/query/src/qFill.c b/src/query/src/qFill.c
index 8a5efafced81cfe8703f629f5f7969ced09f2dc0..17642892196d2aa6efa64cc674746b0284424c3a 100644
--- a/src/query/src/qFill.c
+++ b/src/query/src/qFill.c
@@ -494,7 +494,7 @@ int64_t taosFillResultDataBlock(SFillInfo* pFillInfo, tFilePage** output, int32_
   if (remain == 0) {
     fillExternalResults(pFillInfo, output, numOfRes);
   } else {
-    fillResultImpl(pFillInfo, output, numOfRes);
+    fillResultImpl(pFillInfo, output, (int32_t) numOfRes);
     assert(numOfRes == pFillInfo->numOfCurrent);
   }