diff --git a/test/cpp/microbenchmarks/bm_cq.cc b/test/cpp/microbenchmarks/bm_cq.cc
index 502320d6dc3..195dcef3abd 100644
--- a/test/cpp/microbenchmarks/bm_cq.cc
+++ b/test/cpp/microbenchmarks/bm_cq.cc
@@ -109,6 +109,7 @@ static void BM_Pass1Core(benchmark::State& state) {
     grpc_exec_ctx_finish(&exec_ctx);
     grpc_completion_queue_next(cq, deadline, NULL);
   }
+  grpc_completion_queue_destroy(cq);
 }
 BENCHMARK(BM_Pass1Core);