diff --git a/y2024/wpilib_interface.cc b/y2024/wpilib_interface.cc
index 7e55780..508b610 100644
--- a/y2024/wpilib_interface.cc
+++ b/y2024/wpilib_interface.cc
@@ -392,6 +392,8 @@
         &constant_fetcher_event_loop);
     const Constants *robot_constants = &constants_fetcher.constants();
 
+    AddLoop(&constant_fetcher_event_loop);
+
     // Thread 1.
     ::aos::ShmEventLoop joystick_sender_event_loop(&config.message());
     ::frc971::wpilib::JoystickSender joystick_sender(