diff --git a/templates/normal/experiment.cpp b/templates/normal/experiment.cpp
index 84bac02..ef06368 100644
--- a/templates/normal/experiment.cpp
+++ b/templates/normal/experiment.cpp
@@ -62,7 +62,7 @@ void benchmark_out()
             auto start = base_clock::to_time_t(benchmark[i][j].start);
             auto end = base_clock::to_time_t(benchmark[i][j].end);
             auto core_id = benchmark[i][j].core_id;
-            std::cout << "instance " << i << " ";
+            std::cout << "instance " << j << " ";
             std::cout << "start " << start << " ";
             std::cout << "end " << end << " ";
             std::cout << "core_id " << core_id << std::endl;