diff --git a/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc b/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc
index 06922afda3c..85767c8758f 100644
--- a/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc
+++ b/test/cpp/microbenchmarks/bm_cq_multiple_threads.cc
@@ -166,6 +166,8 @@ static void BM_Cq_Throughput(benchmark::State& state) {
   }
   gpr_mu_unlock(&g_mu);
 
+  // Use a TrackCounters object to monitor the gRPC performance statistics
+  // (optionally including low-level counters) before and after the test
   TrackCounters track_counters;
 
   while (state.KeepRunning()) {