diff --git a/test/cpp/qps/worker.cc b/test/cpp/qps/worker.cc
index 45b8b6dd9a9..3a46a22665d 100644
--- a/test/cpp/qps/worker.cc
+++ b/test/cpp/qps/worker.cc
@@ -93,7 +93,7 @@ std::unique_ptr<Server> CreateServer(const ServerConfig& config) {
   abort();
 }
 
-class WorkerImpl final : public Worker::Service {
+class WorkerImpl GRPC_FINAL : public Worker::Service {
  public:
   WorkerImpl() : acquired_(false) {}