diff --git a/test/cpp/qps/client_callback.cc b/test/cpp/qps/client_callback.cc
index ac70894712e..e61e36c9ee1 100644
--- a/test/cpp/qps/client_callback.cc
+++ b/test/cpp/qps/client_callback.cc
@@ -321,7 +321,7 @@ class CallbackStreamingPingPongReactor final
         ctx_->alarm_.reset(new Alarm);
       }
       ctx_->alarm_->experimental().Set(next_issue_time,
-                                      [this](bool ok) { StartNewRpc(); });
+                                       [this](bool ok) { StartNewRpc(); });
     } else {
       StartNewRpc();
     }