diff --git a/cpp/velox/operators/serializer/VeloxColumnarToRowConverter.cc b/cpp/velox/operators/serializer/VeloxColumnarToRowConverter.cc
index 9a474f8141c..49fd05ffd43 100644
--- a/cpp/velox/operators/serializer/VeloxColumnarToRowConverter.cc
+++ b/cpp/velox/operators/serializer/VeloxColumnarToRowConverter.cc
@@ -69,7 +69,7 @@ void VeloxColumnarToRowConverter::refreshStates(facebook::velox::RowVectorPtr ro
 
 void VeloxColumnarToRowConverter::convert(std::shared_ptr<ColumnarBatch> cb, int64_t startRow) {
   auto veloxBatch = VeloxColumnarBatch::from(veloxPool_.get(), cb);
-  refreshStates(veloxBatch->getFlattenedRowVector(), startRow);
+  refreshStates(veloxBatch->getRowVector(), startRow);
 
   // Initialize the offsets_ , lengths_
   lengths_.clear();