diff --git a/y2020/control_loops/drivetrain/drivetrain_replay.cc b/y2020/control_loops/drivetrain/drivetrain_replay.cc
index 5a97943..0dd5a1a 100644
--- a/y2020/control_loops/drivetrain/drivetrain_replay.cc
+++ b/y2020/control_loops/drivetrain/drivetrain_replay.cc
@@ -46,11 +46,10 @@
     node = aos::configuration::GetNode(reader.configuration(), "roborio");
   }
 
-  aos::logger::DetachedBufferWriter file_writer(FLAGS_output_file);
   std::unique_ptr<aos::EventLoop> log_writer_event_loop =
       reader.event_loop_factory()->MakeEventLoop("log_writer", node);
   log_writer_event_loop->SkipTimingReport();
-  aos::logger::Logger writer(&file_writer, log_writer_event_loop.get());
+  aos::logger::Logger writer(FLAGS_output_file, log_writer_event_loop.get());
 
   std::unique_ptr<aos::EventLoop> drivetrain_event_loop =
       reader.event_loop_factory()->MakeEventLoop("drivetrain", node);
diff --git a/y2020/control_loops/drivetrain/localizer_test.cc b/y2020/control_loops/drivetrain/localizer_test.cc
index a7360c1..ae9f887 100644
--- a/y2020/control_loops/drivetrain/localizer_test.cc
+++ b/y2020/control_loops/drivetrain/localizer_test.cc
@@ -135,10 +135,8 @@
     set_battery_voltage(12.0);
 
     if (!FLAGS_output_file.empty()) {
-      log_buffer_writer_ = std::make_unique<aos::logger::DetachedBufferWriter>(
-          FLAGS_output_file);
       logger_event_loop_ = MakeEventLoop("logger", roborio_);
-      logger_ = std::make_unique<aos::logger::Logger>(log_buffer_writer_.get(),
+      logger_ = std::make_unique<aos::logger::Logger>(FLAGS_output_file,
                                                       logger_event_loop_.get());
     }
 
@@ -399,7 +397,6 @@
   double turret_velocity_ = 0.0;  // rad / sec
 
   std::unique_ptr<aos::EventLoop> logger_event_loop_;
-  std::unique_ptr<aos::logger::DetachedBufferWriter> log_buffer_writer_;
   std::unique_ptr<aos::logger::Logger> logger_;
 };