diff --git a/test/cpp/util/metrics_server.h b/test/cpp/util/metrics_server.h
index b04879c..2caacad 100644
--- a/test/cpp/util/metrics_server.h
+++ b/test/cpp/util/metrics_server.h
@@ -97,7 +97,7 @@
   // NOTE: CreateQpsGauge can be called anytime (i.e before or after calling
   // StartServer).
   std::shared_ptr<QpsGauge> CreateQpsGauge(const grpc::string& name,
-                                     bool* already_present);
+                                           bool* already_present);
 
   std::unique_ptr<grpc::Server> StartServer(int port);