diff --git a/cpp/src/graphar/high-level/graph_reader.cc b/cpp/src/graphar/high-level/graph_reader.cc
index e0d2ed8d0..dc4cc4ae0 100644
--- a/cpp/src/graphar/high-level/graph_reader.cc
+++ b/cpp/src/graphar/high-level/graph_reader.cc
@@ -209,8 +209,7 @@ Result<std::vector<IdType>> VerticesCollection::filter_by_acero(
   std::vector<int> indices;
   const int TOT_ROWS_NUM = vertex_num_;
   const int CHUNK_SIZE = vertex_info_->GetChunkSize();
-  const int TOT_LABEL_NUM = labels_.size();
-  const int TESTED_LABEL_NUM = filter_labels.size();
+
   std::vector<int> tested_label_ids;
   for (const auto& filter_label : filter_labels) {
     auto it = std::find(labels_.begin(), labels_.end(), filter_label);